I’ve offered mine. At $200 plus shipping. It’s as low as I can go. It ticks off every box on your wishes except 4 sections instead of 3. It is plenty sturdy enough for your rig mentioned. For me it holds a canon 5D4 and canon 100-400 L lens plus 1.4 x converter. Sometimes with a Wembley gimbal mount. Others have offered their gear or suggestions. As someone said above, you’re going to be hard pressed to satisfy you're requirements for under $200
Longlens24 wrote:
I continue to look for a CF tripod, w/fliplocks, 3 leg segments,60" height ( w/ or w/o center column) , stiff enough for D810+ 400mm lens, under $200.
Stan