The choice of choke combo's in a 16 Ga is no different than for a 20 or 12, since choke restriction is based on % of shot in the pattern, regardless of gauge. Your choice of chokes really is based on what distance you are shooting.
I live in SD and have been shooting wild birds since 1972. With reflexes tuned from shooting clays all summer, and using a pointing/flushing lab, my shots are usually close. As such, I use IC/IC in all three gauges (Citori 725,Citori Lightnings)The only time I use different chokes is in late-season, then switching to LM/Mod or Mod/IM.
If you are a casual shooter, that doesn't get to spend much time in the field, and hunts early in the sesson, IC/Mod will probably be OK for you. However, if you normally shoot at the longer ranges, or later in the season, Mod/IM or IM/IM would be a safe bet. With today's modern ammo with 1-piece shotcups, there is likely no reason to ever need a full choke.