Minimum tank for sub-adult (6 inches or bigger) would be a 55, and that's fitting him in there with a shoe-horn. I don't know that I've ever seen a pair of happy oscars in a 55. A 75 is a better choice. The difference that swimming room makes is amazing.
Albinos are just a tough as the regular guys, and are neat pets. They tend to get this "dirty" look to them as they age, with some browning on the edge of the fins. I'm not a big albino oscar fan, I think the brown/red tigers are quite attractive, but to each his own...