At this time? Well I'd want to keep the obvious (except Gibson, I've said I don't think he makes it, but right now he looks like a lock). As for the guys at the bottom of the roster, I'm not really as familiar with them as I usually am, but in general I tend to think that the tie should go to the younger player. I'm doubtful about Armon Binns (I was not a fan of his when he was in college) and think that guys like Damian Williams or Stephen Williams will probably look better than their talent level simply because they've in the league for a while and have a few things figured out.
I'm intrigued by Matt Hazel, but he has to show he's not another Jasper Collins (who was totally overwhelmed by the uptick in competition and found himself pretty much unable to beat the jam). I like receivers with his body type, though, guys that are in that 6'1, 185 pound range. I think they tend to make the best receivers when it's all said and done. The main challenge for them ends up being the physicality part of the game... beating the jam, body control on tough catches. These days the physically imposing receivers are getting more and more help from the rules so you're seeing more of those guys coming in and being successful than the Marvin Harrison/Torry Holt prototype I grew up watching.