You shouldn’t need any of that. By level 10, you’re pretty much unstoppable.
What are you having trouble with?
Just dying left and right, difficult to deal with big groups of enemies, killing speed is nice but staying alive is difficult).
Traps was real pain before I found motion tracking gooles (must-have for 3 per charactres).
I found melee playstyle much-much more difficult than psi or guns, with ranged attacks it is very easy to win every fight by cheesing bear traps and gas grenades.
I think my problems are more about my playing skill, not build. Now I try to craft end game gear and I see how it will be.