Need help setting up some B-roll shots
 

This might be just way too vague a question to ask on a forum but hopefully someone can help.

I need to shoot some b-roll for a feature I did last summer. I just want to use my Canon 7D and the light provided by the locations where I need to get coverage.

Some locations I need to shoot are a night club in full party motion, a resturant with patrons eating and a couple of exteriors. No movie lights or anything.

The lenses I have at my disposal are:

Pentax 28mm 2.8
Pentax 50mm 1.4
Pentax 135mm 2.0
Sigma 14mm 3.5
Canon 24-135mm kit lens (doubt I'll use this)

I do have a colorist but I plan on shooting specific items to help match the scenes better, like pouring drinks at a bar for the transition rather than people dancing in an obviously darker lit club.

Any idea what kind of settings you'd use on the camera? Arpeture settings? I tried contacting my original DP but can't reach him (he's on location on another project). I'd like to try shooting this myself first before I have to resort to more drastic measures. I'm thinking that the 50mm 1.4 would be the lens to use because of it's arpeture size but if there's a way to use the 14mm 3.5 I'd like to hear suggestions.

When we shot we kept the iso at 250-300 but I'll obviously have to bump that up, I'd just like to make sure I don't get grain.

Any help, I'd appreciate it.