Oh so pure PSI is just the superior route from what you linked that's good to know and the lack of perception will not cause a lot of things to get closed off to me because It say it reveals secrets or is it mostly just loot? I also noticed you do not have any points in technology and lockpicking/hacking are those not as important as I thought in this game?
With Snooping (which I do recommend) you'll be able to find almost all the secrets in the game quite easily even with 3 Perception. Technically, you could even do it without, but that's razor-thin min/maxing and I try not to recommend that especially for new players.
I believe that if you read more closely you'll find that I specifically recommend going into Lockpicking and Hacking from level 1. I just didn't fill them in because while they
are extremely valuable, they
aren't necessary, and I prefer to leave free points available so players can fidget around and design a build
they want to play, rather than a cookie-cutter build that I want them to play.
Crafting skills, hacking, lockpicking - all of those get attention in my recommended build suggestions. However, crafting can wait until level 12-14 or so; if you do hold off, that'll free up your skill points for more immediately helpful things, like better combat skills, and better world manipulation skills.