Do you really need a whole season to do that? I mean, the team is full of professionals. I would think a few games to play as a cohesive unit, but not a whole season. Look at the BPL, top clubs are still signing big players the second week into the season and they are certainly not giving the team a whole season to learn to play with the new signings -- they expect the win this year.
That said, given that our team will primarily be staffed by the expansion draft, the quality of players may not be up to par to win the cup in the first or second year. Villa and Lampard are not likely to play every game, given their age, and they can't carry the team by themselves anyway.