In psy, mental strike is definitely skippable. Placate and Boggle are situationally useful, with Boggle having the benefit of taking confuse IO sets for the set bonuses. If you are not planning on using invention sets, then either (or both) powers will give you more control options. For SR, you likely don’t need to take Elude as you can be close to soft capped to positions (melee, ranged and AOE) in regular (non-incarnate) content. I don’t have Pine/Mids at work, but my memory is that with all of SR’s powers slotted for defense, combat jumping, and weave, you’ll be very close. If you only get one special IO - Steadfast Protection’s +3 defense - you’ll be closer still. Also, picking up tough on the way to weave (from the fighting pool) will provide a little more smashing/lethal resistance to pair with your scaling resists from Agile.
It’s really worth learning to build with sets, as well as a fun meta-game, to maximize your character’s performance. Start by downloading Pine’s!