I really wouldn't worry too much about the details. The main thing is picking legs and weapons (and maybe an appropriate FCS), and then just fill in the rest whatever will let you hit the weight/energy requirements.
I quickly hit a point where I had a few saved build templates that I liked, and I would just switch between those for the rest of the game. With occasional upgrades when I would get access to new weapons or wanted to try a different approach on a boss.
― Jordan s/t (Jordan), Sunday, 24 December 2023 17:00 (five months ago) link