6a 5b JC j.b j.c 2d JC j.2c (combo drops, hit registers as a level 2) (6a) 5b JC j.b j.c JC j.b j.c j.236a
That one looked like it landed somewhere between 2 and 3k total damage. Hard pressed to tell for sure, since I don't really stop to look at the numbers in the middle of that, and it doesn't count as a single combo.
The non-dropped version (level 3 j.2c hit into BBL) doesn't seem to do an amazing amount of damage, unfortunately. Didn't get any actual numbers, though.
It might work with 2b/5b. I tried it earlier, and it seemed as though it was feasible.
That said, I did the combo starting with 2b 5b 5cdc, and the overall damage was around 2k. I'm not sure if that was because I swapped out 3c236a or because I opened it with two moves, but it certainly wasn't 3k damage.
God, I suck with CS Rachel. I'm way too used to using 6a and 6b. The latter is useless, and the former has a very changed hitbox and extended recovery, so I just keep whiffing it and getting punished.
She still seems okay, though. Far from good, but still 'okay.'
Tsubaki seems significantly stronger than Rachel, on an unrelated note. xD