Wedding Ahead!!! Flash?,triggers ?several questions in one post

Here is the situation ...have a wedding soon (4-5 weeks) I currently use a 7D with the 580IIex flash sometimes attached to a bracket with my camera ,sometimes away using 7D wireless system
The place is a banquethall with low white ceiling so I usually use flash rebound.
Q: Does anybody here use(currently) and trust on the yunong flashes for this works? wich one you are using?( I am planning to set at least 2-3 more with a stand)
if using triggers, for every ligth you set a configuration and dont change it during the event?
which triggers are you using now?
Do you recomend for this type of event the PW instead?
glad to here your opinions

I forgot to say that I could have an assistant with me

I started weddings by using sunpak 555's. With pw Plus triggers. I'd have one or two on tripods, and I had one held by an assistant always at a set distance from the subjects, becuase the flashes are manual only.
That said, I LOVE my new flex/mini's. MUCH more flexible.
But...you need to make a decision soon, and practice with what you have. There should be no surprises on wedding day. Sounds like you are planning ahead, which is good...but your only worry on wedding day is getting a good shot, not if your flashes are going to work/be strong enough/run out of batteries/etc.