Can I plant in a 4oz bathroom cup then transplant to a party cup afterwards via tiered transplanting or is this considered using more than the soil available? I ask this because technically I'll be using almost the same amount of soil since the cup will be transplanted inside the party cup.. Only thing I ask.. I just started a couple beans in rapid rooters but I want to put the rooters in 4oz cups then into the party cups to tier them.. I've noticed huge growth spurts with tiered planting! If not I'll just start in the 4oz then do a full transplant to the party cup.