I really don't think you need 10 items. Most of etsy's guidelines are more applicable to people who make things, not vintage sellers. I think I started out with 3. Occasionally people will favorite your shop but most buyers find you randomly when they are searching for vintage Coach and they won't care that you don't have a bunch of items, as long as you have the one they are looking for. If they care at all, they will be more concerned you have no reviews.No, but they recommend having at least 10 items in stock to start with. So it's just getting over that speed bump of rehabbing 10 bags (I'm most of the way there at the moment) then writing descriptions for each one. I'm not going into stuff like "there's a small scratch on the turnlock" but on one bag there's a small gash under the creed which I'm definitely listing. Since I started taking pictures too I bought some super fine steel wool and its really helped on the brass fixtures since some of them were looking gross and Brasso didn't do much to help. So now I have to take new pictures of some bags too (sigh.)
On ebay you can't tell who your watchers are, but on etsy you know. In all but one case on etsy, the people who bought hadn't favorited the listing or my shop. The buyer who favorited my item bought it a half hour after she favorited it.
Some people really care about scratches on the hardware. You don't have to mention every scratch but you can say "hardware has minor scratches" or something like that.
Be prepared to wait awhile for your sales. You can't get rich on etsy with vintage. They don't get the traffic like ebay.