Um....im not sure i understand what your second post is asking.
Is there a reason for wanting to take the combination you mentioned?
I dont think you're going to get any sort of effects approximating "molly" with the substances you are talking about, but i cant say that ive taken any of them.
It is generally not a good idea to mix substances, particularly research chems or things that are not well understood.
Somebody might have experience with what you're asking, but i havent seen many positive opinions on the effects of DMAA.
"bath salts" is a generic term used to mask the true identity of substance (or cocktail of substances) unknown. DMAA may be a part of some blends, but substances such as MDPV are generally more associated with "bath salts" to my knowledge.
I recommend doing a lot of reading before taking these sorts of drugs....unless you want to have a shit time.
I dont think taking weird combinations will make dmaa any less of a shit drug, but may just make things worse.