If this is a future project, keep in mind that there are different types of concrete for outdoor vs. indoor use, and a host of additives that will affect the outcome of both mixes.

Also make sure that the finisher knows that you will be epoxy coating the floor.....you don't want, or need a "slick" finish for a future epoxy coating, and you absolutely don't want a sealer applied, which is fairly common on indoor concrete.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.