I have 1st pick and I am not sure for a hitting park:
1)T Clark-good value but has potential injury problems and plays a position where slugging would be available later in the draft.
2)Floyd-Bargain slugging, but can put up very ordinary stats in an $80 league even in a hitting park, as I have had him a few times. Still has dependable production and a cheap price. I can always get a more costly slugger later.
3)Manny-Bargain slugging. Potential HR leader at a reasonable price.
4)Vlad-might as well take Manny with no injury potential.
5)Griffey-One of few affordable power hitting CF.