I am about to start doing a portraiture project. I will be using colour 6x6 film and getting the negatives scanned and then printed. I want to make reasonably large prints - maybe 12x12 but possibly larger e.g. 16x16 depending on cost.

They will be indoor portraits, lit with a combination of flash and fixed light(s). I'll be shooting them with a Rolleiflex. I have little clue really what I am doing and I have little or no experience with colour film.

Can someone suggest a good film to use? I'm looking for fine grain, lots of detail and so on. I imagine more or less anything would do but thought I would consult the wisdom of APUG in case there are obvious ones to go for ...