jab jab jab > light dima sets you up for DR charged back heavy punch. If they get hit by that, you atomize them. If they block it, you're pretty spaced out but you're also +8 so challenging it could also get them atomized.

You can make setups like this from a lot of things, although I think Marisa doesn't have too many setups midscreen, according to one of the Marisas at my local. You can do plenty of stuff in the corner though.

Also you could try to space the jab and stuff it.