Panman wrote:I didn't expect them to grow this big this fast
From what I've seen based on plants around the country and world, our plants typically store a lot more below ground here and look much smaller than they actually are. Once they are sent to a new climate that is much more sub-tropical with warm nights and high humidity, such as anywhere in the southeast or the eastern US, they typically quickly grow to a very large size!
Panman wrote:so what do you think should be the next pot upgrade option? I don't have enough room to pot them all in their own 3" pot.
What is your long-term plan for them? You might get one big pot and stick them all in it to get a nice carpet of traps. Or, if you want to grow them out to give away or sell, you could choose the largest ones and repot them into however many larger pots. Then once one finds a new home, upgrade the next largest one to the larger pots that you have space for.