I don't think being too fussy is a problem, but I don't think you should compare against what you already have though.

I do find myself not wanting to open quite a lot of sets because I don't fancy them. If I do open them my body language doesn't work correctly, because my heart isn't in it.
I do find there is a fine line between not wanting to open and using it as an excuse, there should at least be a few sets you want to open in a night.

In terms of being social and opening lots of people making a difference to your progress on the night with a girl you fancy, I can't be sure. There are other ways to increase your social value as opposed to opening every set in the building, for example knowning key people - bouncers, managers, bar staff, djs.

My 2c. Hope the sargings going well mate!!