I threatened another post on this and here it is. Since the blaster box, I bought 4 rack packs and the Phillies related cards and the Astros card I didn't have on eBay.
These rack packs also featured another parallel set aside from the Green Turf and Gray parallels I found in the blaster.
I now have 68 of the 90 cards. I think I've reached the limit of diminishing returns in regards to buying more rack packs or another blaster. Most of the cards I'd get would be duplicates. So I probably won't complete the set.
With 68 cards you'd think I'd be able to complete one of the card back puzzles, but no. This is the closest I got.