I recently did a diaper trial and found that I liked the Flips and Bum Genius 4.0s the best. I'm trying to figure out how many I really need to build a good stash, specifically Flips/Inserts. I was gifted a bunch of BGs and I bought some seconds today from Cotton Babies. I currently have (or have on the way) 8 BGs with Aplix and 5 BGs with Snaps. That seems like enough pockets, is that right? How many Flips/Inserts would you throw in to round it out? Thanks for any advice!