yes, should be fine. there are ways to cheese the game with pretty much any build, so long as you don't spread yourself too thin. Try to pick feats that stack or compliment each other. Pick your feats first then build your stats around the minimum requirements for those feats. Try to scale your feats so they are useful at the level your character recieves them, and try to time your stat boosts at 4,8,12 ect to coincide with feat requirements, and put any excess points into your main combat stat (Str, Dex, or Per) to get higher skill values for the weapons you use most.
Thank you very much!
AR's, Shotguns, and Sniper Rifles all use different feats, and so does any kind of psi. If you're going to get psi you should generally put just enough into Temporal Manipulation to get the Action Point Boost Power because if you don't its like leaving money on the table.
Oh yeah, i will surely get that tm hybrid.
I just really wanted to play; for example ar which i never touched because "its boring and op" and maybe use metathermics instead of grenades which imo will be much more interesting (and climatic) even if it will make the game harder. Im just wondering how much do I have to invest into metathermics to make it viable enough.
Also though control instead of metathermics is as option to me. Anything to not make another gun+55 tm build

Ideally weapon choice would be sniper or shotgun, i think ive seen sniper build (couple years ago) paired with metathermics for thermodynamic destabilization.
But im down to try ars for smoother gameplay if i have to.
Thanks for the answers, i will update when i cook and test