Thanks for the comments, all. Time in the bottle has increased carbonation a bit, but hasn't done anything for head retention. within a few seconds after pouring the foam dies and I'm left with a clear, glassy surface to my stout.
Taste has improved some. It's not a bad beer. I'm out of that tripel now, so I do add a touch of sweetness to the pints - usually a tsp of maple syrup does the trick, turning it into a decent maple stout.
Once I have my keezer up and running I'll be able to get all the bottles cold conditioning, which should help clean up some flavors from what I suspect is some yeast yet in suspension.
Thanks for the info on Crystal 120! I've always been scared to use more than a lb. I'll try more next time.