>Click< I'd go for all three in a bid group.
There is no way you should win more than the number requested. AS must verify a loss before releasing more bids from a bid group. That's what the 10 seconds I mentioned above is for. Worst case, AS will not bid because it's not gotten an asnwer from eBay about the status of a previous bid.
Don't know how much time it really takes, but from the link posted, seems things are running very well between AS and eBay.
What day/times do the auctions end?