IF you are sure they are good to use (stealth, unlinked)...I would buy and browse for about 3-4 weeks and then sell low-end items, wait for feedback and slowly nurture them back into existence.
Sandy D uses the term "baby"ing the account - think of it like that.
eBay treats accounts that have not been active that long essentially like brand new accounts.
I would basically do the same thing for an account like this as I would a brand new one. Spend some time browsing on the account. Maybe buy one thing. Then start listing some low risk items until you get a some feedback and rebuild some selling history. I prefer to list used jeans or books or dvds. Like to make it look like I am selling some personal stuff.
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