I think if all the players in the starting 9 were at (or near) the expected potential, the best lineup would be something like:
1. Hudson- Switch hitter, decent speed, good average
2. Byrnes- Good speed, steals bases, ok power
3. Upton- All around 5 tool kinda guy
4. Reynolds- will strike out a lot, but could have a lot of power
5. Young- power, speed, hopefully the average will come
6. Jackson- good average, a lot of doubles
7. Drew- should eventually have a good average to go with good speed
8. Snyder- just concentrate on catching
9. pitcher
Really, they don't seem to have a natural lead off guy, or a clean up guy (though Reynolds may grow into that)...its going to end up being a very versatile lineup full of guys who can hit 20 HRs and steal 20 bases.