My most consistent piece of advice to reenactors over the years has been: Never sell all your gear. Keep 1 full impression.
If you're selling because you need money, you'll never be able to get enough out of a used kit to make it worth the while. Then, when you want to get back in, you won't have the money in one place to take the hit of buying the whole thing again. I've moved a number of times, sold and given away stuff and taken a year off here and there along the way, but I've always kept enough gear that I could show up as a private on any given weekend. Welcome back.
Pine River Boys, Co I, 7th Wisconsin
"We're... Christians, what read the Bible and foller what it says about lovin' your enemies and carin' for them what despitefully use you -- that is, after you've downed 'em good and hard."
-Si Klegg and His Pard Shorty