I almost put mine in a smart pot as well but it wouldn't fit in my case, glad I didn't now ended up going with a 1.5 gallon pot that seems to be doing just fine. The plant is small but that is expected with that size of a pot.You want autos to get rootbound that cant happen in a smart pot. it could be why they are't flowering yet.
Wow that is one really big bud!! What did it weigh at the end?I play with some alaskan and siberian hybrids that i created. Its interesting mine got about 16 inches one bud a few little tiny side branches but not much. Mine always started budding right from a seedling just kept growing into one big bud.If i remember correctly it took about 90 days to finish. One thing you don't want to do is top the plant they tend to just get a bunch of small buds.