Looking good, Jacob. I'd definitely get out of that MG and into something with better water retention and drainage. I'm using a mix of 2 parts peat, 1 part composted cow manure, 1 part coco, 1 part perlite, and some ground dolomitic lime (tablespoon per gallon of mix volume). I'm bottom watering and it is soaking it right up. In fact, it took almost a gallon of water to hydrate the two trays I just potted up (which would be a bit shy of 4 ounces per 3.5" pot).
Mike