Seriously? Are you implying that you can't/won't send items until you have the cleared payment in your hand? That's what it looks like. You are joking, right? That's a disgusting thing to do, and it will cause you no end of trouble.

You need to honour your sales, and ship within your advertised handling time. As an example, if that's 3 days, then you need to ship inside the three day window. When you get access to the funds is totally irrelevant to your handling time. They are two completely different things.

If I were to apply your logic to my situation, I would only post on Tuesdays - because that's when the eBay payment hits my account. That wouldn't do too much for my delivery speed (1 business day handling), now would it??