5 NL Only Prospects for this year

[billsfantasyguru]

I'm drafting an NL only league, 1st year, standard 5x5 league. I realize guys like Bryce Harper and Shelby Miller are on everyone's top five list. My question is, which players in the NL who will start in the minor leagues, have the best potential for producing this year? Any thoughts would be appreciated. I"m looking for straight up potential, pitchers or hitters. Thanks.

[MaudDib]

Nolan Arenado 3B Col
Drew Pomeranz SP Col (might not be considered a prospect)
Trevor Bauer SP Arz

[Goatrider]

Wilin Rosario looking to make the club out of ST.
Brett Jackson will be up soon.
Anthony Rizzo will be up later
Starlin Marte huge ST and knockin on door
Matt Adams may be a sneaky one real late, especially if Berkman goes down.
I think Matt Davidson is getting close if Roberts blows it.
Matt Harvey maybe

Spangenburg and Kolten Wong are two 2b whose team have no second basemen. Probably one year off for both though.