Yo doc go with the kiddie pool seems to be a cheap option too, devenetly go with the airpot they seem to work great and there seems also to be more rootspace so you can have a even more big stretch and wast amount of roots to support monster buds and with these kind of lights you will dev hit big, I think when you will do it its a pain in the ass to do you will dev not do this alone it seems imposible for one person to do this kind of transplant in the large airpots they plant trees...
you will find the best route to go so have a nice one and keep us updated cu doc