are you talking about.
Installing the data for the map as well as map objects should be like 2 maybe 3 gigs. As far as your statement about the
"how much driving/walking/running around you would have to do during/in-between missions"
ima just leave it at
lol, to each his own.. it makes perfect sense to me.. maybe you don't mind it, but personally I would rather not have to do TOO much traveling in-game. I'm easily distracted and I'll never make it to the actual mission itself. look how True Crimes implemented the cab option, something like that would be dope.