Questions about scaling up with eBay drop shipping

I am currently drop shipping on eBay with two different accounts. I mostly use Amazon as the source of my products. I am thinking of purchasing some more high limit eBay accounts for drop shipping and have a couple of questions.

1) How quickly can I put up listings on such accounts? Can I begin making lots of new listings right away? Will eBay or PayPal give me problems if I put up 5,000 or 10,000 new listings in the first month that I get the new accounts?

2) How many total listings…

Questions about scaling up with eBay drop shipping