I joined a keeper league and took over a previous owners team. Need some advice on the keepers.

I have to keep 2 players and I am going to keep Larry Fitzgerald

Here are my other options and I need pick 1. Non are really top guys so I am on fence I have no decent RB's to keep.

Green-Ellis RB
Welker WR
S. Holmes WR
V. Davis TE

Leaning towards keep Holmes and then take best RB's available early. Thought about Green-Ellis but I can probably upgrade in the draft. Any help is appreciated.