To me this depends on league depth and PPR scoring, and even still, as others I've said, I'm not that high on Gordon and wouldn't reach for Eifert even though I love the guy.
I'd have no problem taking Bell in the late first in a PPR. To me, there's no bigger week-to-week difference maker in the PPR game than a RB getting WR2 receiving numbers with a full RB workload. Bell is absolutely that. As for Brady, he probably comes back on the warpath and has a strong season, but I also don't worry about QB that much as I believe there are 12-15 guys you can win with, so I wouldn't force Brady.
I'm not on Gordon as much as some others... I recognize the talent, but he's been out of the league a long time and there were hiccups in his last 4 game stretch he was allowed to play (if I'm remembering this correctly). Now he comes back to a WR corps with a first round pick and a project that's finally appearing to pay off in Coleman and Pryor, not to mention Hue loves both those guys. In the 8th or 9th round, I guess it's worth a swing, but...
In Eifert, I think that's a week 8+ play. I would imagine Eifert's back on the field week 4 or 5, but I don't think he's full speed till right around when playoffs start.
If it's QWWRRTF, I'd definitely gamble on Bell and in general would take more risks... maybe not Brady, but that's just because I hardly ever draft a QB in the 5th. Take Bell, get WRs the next 2-3 rounds and an RB2, end up starting a guy like Crowell or Chris Ivory for a few weeks at RB (if you miss on DW), then come back with a vengeance later in the season. Looking at
@(HULK)'s lineup above, it's plausible you can fill your starting lineup (outside of QB) in rounds 2-7 (assuming the format I stated before) AND still have Bell, then start taking chances on Gordon and Eifert and filling the QB spot. Waiting on QB just makes so much sense to me that I'd rather have that midround pick for WR/RB depth than Brady. Outside of that, no problem taking the rest of the suspended/injured guys.