I just bought MGS 2 and 3 for $10. Which would have cost me 2-3 times as much on disc! Its not like you want any new games other than Bioshock so digital isnt as expensive as you think.
Is completely impractical with the size of 360 hard drives.
I install every game that I play and I have a bunch of Rock Band DLC and I dont have problems. Unless you are playing 50 games at the same time you wont have problems.
I just bought MGS 2 and 3 for $10. Which would have cost me 2-3 times as much on disc! Its not like you want any new games other than Bioshock so digital isnt as expensive as you think.
Digital games rarely go on sale. Physical ones do all the time.