Few suggestions/tips:
1. Shield Wall and Fury of the Gladiator sets are pvp. They basically half the price of a purple. Those sets will be expensive.
2. Don't need to build for s/l defense, like with kinetic combat. SR is about positional defense, don't need to build for both.
3. You absolutely want practiced brawler. One end reduction is all the slots it needs. It is your mez protection and also kb, so won't need to slot for kb at all. Also eliminates need/want for acrobatics. That power is for squishies really.
4. Defenses are plenty high so won't need to buff them later either.
5. Winter's Gift can go in super jump and save you a slot from combat jumping.
6. Focus Chi is a great spot to 6 slot gaussian's set. It ads 2.5% defense to m/r/a. Don't really need the extra defense but could change other slotting up.