Admitting it is an important step...so is accepting it :)
Welcome, dear Sharon.
How about planting in ground, and culling the rootballs in Fall, or protecting the trees after chopping them to 2' height?
I'm going with 6' spacing, which should allow for at least 50 in ground. You can always graft other varieties on, and keep your potting soil costs down by not having to uppot or fertilize as much.
You can also start air layers of those that you don't want to risk losing to weather, and make a small group of backups every year, just in case.
The way I reason with my addiction is by telling myself (and my wife, friends, and coworkers) that I'm trialing 100 varieties, and will eventually only keep 2 (4) dozen or so.
If it sounds like you have a plan, your loved ones won't be so sure you have a problem ;)