Sounds like a good idea there.
I bookmarked the web page of the balls I like to buy.
Then I use the tip from YankeeJim in this thread to buy several sleeves at one visit to the pro shop.
YankeeJim:The fix is pretty simple-buy a bunch and don't worry about it. You can do this real easy when you're in the pro shop. After you click purchase and you get the "equip my bag" screen use your browser back button to return to the previous page. You can click "buy" again and the process can be repeated as many times as you want. Each time you do your account is debited and your bag is supplied.