Have a disc version of GTA4 with all the dlc once they're released for ps3?
They will have it available via Playstation Store and a hard copy with both DLC (TBoGT and Lost and Damned) for $39.99 if you bought it on disc and $19.99 each if you bought it on PS store.
Don't take my word for it, but I don't think everything fits in one disc. The main game will be separated from the episodes.
Both DLC will be on the hard copy. And yes both the dlc and the full game would fit on a blue ray disc. This isn't xbox were talking about.