5000 might start closing in on too many
J/K
I have 10 flyable, or close to flyable right now, and I find myself from time to time thinking--I really want to fly this today, but I really need to fly that, because it's engine hasn't been started in a couple of months, and it needs to be flown. So, I think I'm about at my limit--ten is about all I need flyable at one time. I do have plans for other kits and arfs, but I will thin the inventory first. That's just my personal preference, though. Also, my computer radio only stores info for ten planes at a time, so that is a consideration as well--I don't want to buy another radio right now.