I'd prefer confirmation for new Wish Listers. Folks who've gone through the whole process before, are very comfortable using the Japanese website to confirm things, have checked their Lists carefully for quantities, rates (seasonal v. regular), formatting, etc and who know me and know how stressed I get when things go wrong - you guys ONLY - can go ahead and send funds with your Lists, cos I'm confident you'll be both decisive and careful. Actually, that will probably help a lot. Good idea, Eeee-va!
First-time Wish Listers should wait for my confirmation of your submitted List before sending me any money. It's much easier to solve problems that may arise before you've sent anything. After you send money, if there is some mistake, any changes in the transaction will just result in you paying more fees. I want to avoid this. First-time Wish Listers should wait to receive an email from me confirming that their Wish Lists and totals are correct before sending anything through PayPal.