4-FA ≠ 4-FMA ebola
Its not unusual to go through 100mg of 4-FA in a night. Its not unusual to see much more than that in a night.
I can't see why you would want to mix it with 6-APDB though.
And Dr_Robotnik, you don't have to post your question all over the boards.
In any case, this combo will likely have a nasty crash and I wouldn't recommend it. From the sound of it, you're asking about an ecstasy alternative and I don't know what your motives are but this doesn't sound like a good idea. The APB family are all rather poor substitutes for MDMA, some of them potentially dangerous in overdose, and all of them have wicked crashes associated with them.