I'm honestly surprised you have trouble looking for most of your dreamies! Not a lot of them are popular, so I'm sure if you post on the Looking For Thread or post on some cycling threads, you'll be able to get a majority of them. It'll still take a long time to do with a secondary cycling town, to be honest. (But the bonus is that you can sell the non-dreamies and possibly be able to use those bells to buy your dreamies)