Regarding your questions, of course its personal preference regarding the forks, but also a balance of performance and weight.
I ride with a couple of guys who use 150mm 32’s & they are flexy, no doubt about it. They don’t hang around though. One has gone through 2 CSU’s under warranty now because of them unbonding. He’s not doing anything huge, just rides a lot & fast.
I put 36’s on mine, just because I plan on using it for everything, so wanted something a bit bigger on the front.
I can’t comment on the SRAM drivetrain on the specific bikes, but having used the 10spd SRAM stuff I don’t like it so run Shimano on mine.
Regarding the shock placement, Commencal sell a shock/mudgaurd if you are worried about it. I made one on mine out of an old Neogaurd. Works fine.
There are also some very good deals on the Meta at the moment…