I have 2 Huawei phones in my household. Excellent phones. I know Huawei is made in China, so is Iphone. Suspect the blocking in the US market has more to do with protecting current market dominators from loosing market share.

The next thing is the new Huawei P20 pro cameraphone. Will be realeased April 6th. Probably the best cameraphone in recent years.

This is you best advice. As long as you can fill the frame with the 200-500 lens and D600 camera it will be your best bet. If the 200-500 is not long enough to fill the frame of the D600 with your subjects the crop camera will be a better choice.

Yes, the best 35 mm slr was the one you had with you

Very good question. I have been looking into this as I also often have the need for wider than those 24-25 mm that is usually at the wide end of fixed lens cameras.
Until now I have not found a single point and shoot fixed lens camera with a wider lens than that.

So your best option is to buy interchangeable lens camera and a wide lens with it. And try to make it as compact as possible. That would direct you to something like the Nikon 1 system and the 6.7-13 mm lens. That would compare to a 18-35 lens in full frame terms.

Other manufacturers have someting similar to offer in terms of focal lengts but I think this is the most compact combo of them all. You could get a Nikon 1 V1 camera used for about $100 or a Nikon 1 J5 or Nikon 1 V3 new for a lot of money.

Sigma DP Quattro 0 comes closest to have a fixed wide lens with lens that is 14 mm and about 21 mm in full frame terms.

Well, this just confirms my previous opinion. The D7200 and 18-140 lens will fit your needs very well. If there will be more low light shooting in the future you can always get a different lens for that for less than $200 or get external flash for less than $100. Like some others have mentioned you will need memory card and a tripod could come in handy at times, also a camera bag etc. You can also do well without any of this except the memory card

I never said it was good, but that is how it is

If you can get one refurbed for $90 you should go for it. Very little money for a good prime lens. The salesman is actually giving you a good advice.

Ok, I think you already have a camera in mind that will be a good choice. Grab the D7200 and the 18-140 lens and you are well set to record the beauty of your life. There are other cameras that can also do it pretty well but this one is a good choice so no need to look any further.

That is easy to answer. It is not possible. On the D600 you can look at the histogram in the picture view mode only to check after you take the picture how the histogram looks.

Ok, you want a lens for real estate. Why a fisheye? Fisheye lenses distort the images a lot. The Samyang/Rokinon/Bower/Vivitar/somethingelse is probably the sharpest one with the least distortion but your pics will still be very distorted.

If you want a rectiliniar ultra wide lens that is sharp and good for real estate the Sigma 8-16 is the best choice.
It is available for $500 used at BH. http://www.bhphotovideo.com/c/product/689635-REG/Sigma_203101_8_16mm_F4_5_5_6_DC_HSM.html

Cheapest way is to use photoshop or other photo editing programs to transfer your photos into fisheye like photos.

Maybe you could imporove your current laptop. Adding memory, cleaning the ventilation, shut down unnecessary programs and processes that are clogging your processor after all those years. Transferring pics and videos and other user files to external hard drive. Even completely emtying your hard disk and reinstalling the OS and all the software you use would be an option. Note, this would only be helpful if you are using 64 bit laptop.

This is just an idea in case you may be interested. If you are not used to do stuff like this you would have to learn online how to do it or take it someone who know what to do.

Here is a youtube video from last year about building a good photo and 4k editing desktop pc for $638. You would have to add a monitor, mouse and keyboard to that price but should be able to complete the project will within $1000 even if you have to buy it all brand new. If you have an old keyboard and mouse somewhere around your house you can probably use that.

http://www.youtube.com/watch?v=a20QRW162ZQ&t=9s

The D7200 and the 18-140 lens would be a good combo. However before making a top 10 list that is of any use for you you would need to answer some questions.

1. Budget, you have that stated as $1000-1200
2. What are you going to shoot with your camera?
3. Is weight and size of the camera gear an issue for you?
4. Are you going to shoot a lot outside in different weather conditions - to know if weather sealing is important.
5. Are you going to travel a lot with your gear?
6. Are you going to shoot a lot in low light, and then what?
7. Are you going to make large prints from your pics or planing to view them mostly on your TV and PC, show them on social media etc.

This is my top 7 list for you to answer before people can make a top 10 list of cameras fitting your needs