3 WR's or 3 RB's?

[Coppa]

Standard, 8 team, non-PPR League
Starting lineup is 2 WR's 2 RB's and 1 Flex
Right now I have my starting lineup as:
RB: Ray Rice
RB: MJD
RB: Tolbert
WR: G. Jennings
WR: M. Austin

But my bench is:
Bryant (WR)
Welker (WR)
J. Nelson (WR)
J. Stewart (RB)
(I have SJAX but obviously can't play him unless something changes)

My question is should is what I should be doing about my flex? Should I be starting another WR or sticking with 3 RBs. Also, which WR's should I start? I feel that Jennings, Austin, and Welker are pretty equal right now, with Bryant and Nelson being a little worse.

Sidenote: On the waiver right now is:
Hightower
Addai
Williams
P. Thomas
(I'm not against dropping Stewart for one of these guys)

[HotHandz305]

I'd definately drop Stewart and pick up Hightower and consider putting T Tower as your flex.

[diablo99]

I'm a fan of playing 3 wrs but I'm in a ppt league. Welker is money in a ppt league but standard not as much. I'm a pats fan and last night was an exception not the norm for welker. Tolbert can def put up points but I am a huge fan of dez. I would start him along with your other 2 wrs. Thanks for the help.