Is your FLEX a traditional FLEX (RB/WR/TE)? I agree Bell at #2. I think 2nd round is way too early for CMC. All drafts I've seen him he is going at the 3/4 turn or mid 4th round. If you went Bell at 1.02, Gurley at 2.11, you could double up on WR/WR at 3.02 and 4.11. If Gronk was there at 2.11, that would be appealing also. You could also do WR at 2.11 and RB at 3.02, then go either RB/RB, WR/RB, or RB/WR at 4.11 and 5.02.
IMO, I would highly consider taking Kelce at 3.02 if Gronk is gone in second round. Kelce could finish #1 fantasy TE overall this year... the KC offense is supposed to be opened up alot more with Alex Smith this year
Possible combos you could end up with after 5 rounds
Bell, Gronk, Gurley, Tate, Davante Adams (picked rounds 1-5 in that order)
Bell, Gurley, Cooks, Mixon, Terrelle Pryor (picked rounds 1-5 in that order)
Bell, Baldwin, Kelce, Ty Montgomery, Landry (picked rounds 1-5 in that order)
Bell, Dem Thomas, Kelce, Ty Montgomery, Mark Ingram (picked rounds 1-5 in that order).
The longshot is hoping that Zeke falls to you at 2.11, so if you like that you would end up with Bell, Zeke, WR, WR, TE OR Bell, Zeke, TE, WR, WR after 5 rounds. If you did that method, snag McFadden in the later rounds of the draft. Crowell in round 3 or 4 is a very nice pickup too if he's your RB2 paired with a stud WR or TE.
Does that help?
-Wes
*EDIT* - in one of my drafts this year that I completed on 8/20/17 (1 QB, 2 RB, 2 WR, 1 TE, 2 FLEX (RB/WR/TE), 1 DEF, 6 bench) .5 PPR 6 point passing TD, keeper league that has to come from the 4th round or later the previous years draft and costs you the round you drafted him in, my first 5 picks were (I had #6 overall spot) were:
Evans, Cooper, Hopkins, McCaffery, Ingram.. Kelce was my keeper in round #6 (I drafted him last year in round #6).
If you can hold off until 3rd or 4th to grab McCaffery and you love him, take him as your RB2.