Yeah that should work fine. You can stay with the Miracle Grow products if you want. I would avoid the soils that have "moisture control/retention", but any normal potting mix (be sure to add 1/4 to 1/3 perlite or vermiculite) should do the trick. Since MG has ferts in it already, you won't need any supplemental ferts/nutes for about 2-3 weeks from each transplant. Best bet is to browse around the grow logs and see what other people are using and their results.