Do you need to sell the stuff for money for the house or just in general?
If you don't need the money for the house and you like selling stuff I'd keep doing it.
If you want to sell to reduce the amount of junk you're moving in and for some extra cash flow I'd keep anything you might need for yourself and whatever is always going up in value and sell the rest.
But I'm the kind of person who keeps anything I think I'll need unless I need the money or space more so I'm not the best person to offer advice. I've lost count of how many times I've gotten rid of certain parts and end up needing them later and either can't find them or cost a lot more then they when I got rid of them