K.R.
FYI, Moscato is really sweet like a desert wine. May I suggest my favorite white, which is a Riesling (Barefoot, Relax, and Yellow tail are good inexpensive brands), it is sweet, but not as much. It is a good one for someone who's not a typical wine drinker.
Barefoot also has a good Pinot (good wine choice!)...keeping the cost low.
Don't do more than 4 types for a small party unless it's a "wine tasting" party. Keep the white wines chilled in an ice bucket for display and serving.
IF you are interested in trying a red, don't do Merlot--go for Old Vine Zin, or Malbec, which are more palatable for those who aren't wine snobs.