Well the timing on its a little tight but this is what i have so far as my BnB for rain

JIP> 1 2 F4 > Dash > 3 3 QCB4 > 1 1 QCB2

obviously it leaves a juggle at the end so it all depends on how you wanna finish it, most things I've tried ( enhanced teleport, Enhanced Roundhouse, that up kick thing) usually end the combo leaving it in the mid 30s, however you can add in a QCF3 for the bubble then x-ray at the end for about 45% IIRC

Super easy to do.

Enhanced Boost, JPS, BP, c-Enhanced Lightning, Enhanced Super Kick, uppercut.

7 hits, 48%.

Also, this probably should have gone in the stickied Kombo Workshop thread.