Looks good bro.
You can find all your potting needs at Walmart! They have 10" plastic pots for like $1.00.
MG isn't the best choice, but its certainly not the worst. All you need to do is add in some more pear lite and vermiculite, as well as a good nute program.
Since I knew I would be using MG Potting Soil (pH balanced, no slow release nutes), I ordered BARRICADE from Advanced Nutrients. This will protect against any stresses the plant encounters. I've heard great things.
Good luck!