What you want and WILL pay for :hunf:
A medium of the road CPU 2.9~3.2 anything above adds K$$
RAM anything => 16GB (DDR3, DDR4 ~ available ~ will cause you to sell all your cameras and your first born)
MS2 drives (these do not use any power) size from 128GB to 500GB
SSD Drive (just about the same size)
Graphic card(s) should be at least 4GB DDR5 the one I have can drive 3 additional monitors through a 1 UDMI and 2 Mini UDMI ports for a total of 4 displays!!!
Connections:
4 USB 3.1, Optical sound output, regular sound (headphone/microphone)
Connectivity:
Ethernet, Wireless, Blue tooth
Other:
Blue-ray (acts also as DVD-R), memory card reader, integrated camera
Base price for a shell as per the "foot note" Around 3k.
Best bet, in my opinion. is to purchase a gaming laptop* shell from MSI with a minimal options and upgrade as you go, that way you can save up to 30% of the 'customized rigs'.
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* Info
CPU is fixed so you must make a hard choice.
RAM should be user up-gradable make sure how many slots are in there and that you maximize the first slot and nothing on the others. (Many customization outfits will put cheaper sticks in there. The result being that when you push the memory up you lose what was installed so... A requirement (only one stick) not an option here.
Graphic cards come in many type and flavors. I selected to have two cards installed with 6GB DDR5 graphic memory. That way while it is user up-gradable I did not have to deal with the cooling and other side issues like cabling (I have clumsy fingers)
A Game rig can have up to 4 MS2 drives for a total of 2 TB (512x4). Getting a 128GB is best as even if you upgrade that drive to a 512 the cost of difference from the upgrade to pre install makes it worthwhile. These drives are basically SSDs but they are connected differently and significantly faster. Oh, for $19.00 you can purchase a MS2 drive PCIe adapter and use that 128gb MS2 drive as a scratch or temp drive for your PP software, tremendous speed gain here.