Easy, at least as far as I can see, gestalt a Warlock with Wilder/Kineticist/Shaper and use that for the bombs. Wilder if she's(I assume it's a she, some settings just don't have a place for guys) Tsurupettan and sensitive about it. The Crystal swarm/shard/burst of powers satisfy as far as physical attacks are concerned and Energy <Whatever> for well, energy, properly overchanneled.
For a specific one, Sakuya has Stratovarius's Echo class, which can be comboed with Psychic Warrior, Warblade or Nomad, with perhaps a dip in Master Thrower. You wouldn't be able to get the same flood of blades out, but it can come close, and again, Swarm of Crystals satisfy some of the more extreme exertions.
I'm no good at psionics... and I end up with poorer BAB and saves in general when I use Wilder instead of a Swift Hunter build. Of course, that gives me bombs, which is still absurdly tempting... and it's a lot better on the synergy. I ran the stats down and at lv 6:
LA +2/Warlock 4//Warrior 2/Ranger 1/Scout 3 - BAB +6, +7/+5/+4
LA +2/Warlock 4//Warrior 2/Wilder 4 - BAB +5, +4/+1/+4
Of course, it's really the abilities that matter, but doing the former is a lot harder to hit. I might end up going with Wilder anyways, although I'm currently crash-coursing myself on psionics.
I don't get what you're doing with LA there. The LA should just be levels in a NPC class. (I recommend expert at first level for the skills). Also, given that we're apparently not using fractional saves and BAB, making sure your classes are "out of phase" is a definite advantage (taking advantage of this is a little cheesy, I admit. It's basically the same as single level dips for good saves, but a little more complicated).
I believe Expert 1/Warrior1/ Warlock4//Ranger1/Wilder5 gets you a BAB increase at every level, and your saves will be pretty good too. Skills are decent from first level expert, and given how the rules for skills are modified (no double-price cross-class skills, but normal maximums apply), you should look at the class skills from everything else, then pick 10 more as your expert class skills.
Lemme see if I can calculate the saves with non-fractional BAB. Format is fort/ref/will
Level 1: Expert gives +2 will, ranger gives +2 fort +2 ref. Saves are 2/2/2, BAB is +1 (ranger increase)
Level 2: Wilder gives +2 will, warrior gives +2 fort. Saves are 4/2/4, BAB is +2 (warrior increase)
Level 3: Wilder2 gains +1 will, warlock gives +2 will, highest wins. Saves are 4/2/6. BAB is +3 (wilder increases this level)
Level 4: Wilder3 gains +1 fort +1 ref, warlock1 gains +1 will, Saves are 5/3/7. BAB is +4(Wilder and warlock both gain BAB here)
Level 5: Wilder4 gains +1 will, warlock3 gains +1 fort +1 ref. Saves are 6/4/8. BAB is +5( Wilder and warlock both gain BAB)
Level 6: Wilder 5 gains no saves or BAB. Fortunately, warlock 4 gains +1 will, and +1 BAB. Saves are 6/4/9, BAB is +6