I'd pull 20 points each out of Hacking and Chemistry, 5 out of Temporal Manipulation, and either leave Tailoring as it is (if you plan to use leather armor primarily) or take 10 points out of there (if you plan to wear medium armor primarily). Then I'd probably add 20 points to Lockpicking for more loots, and dump the rest into Metathermics. You want the "strongest" choice for a psi sniper, you should be making use of ThermoD. Sure, you've got grenades but when they're all on cooldown it's nice to have another AoE at your disposal, especially if you aren't carrying burst-capable sidearms.