Well, since the ball will be fairly lax in its historical presentation and I hope to gain more mileage out of a tailoring job than an evening of fun. I am going to go for a military shortened coat single breasted with tails (rather than Inverness flaps.) Not unlike Skye Highland Outfitter's "lowlander" jacket.
http://www.skyehighlandoutfitters.co...er_Jacket.html

Leaving that unbuttoned and swept back like a sherrifmuir or the Mackenzie Frain doublet. I will allow my light waistcoat and cravat to show. For the ball and civilian occasions I will attach removable cloth buttons and save some pewter or silver buttons for piping and other occasions where I might fancy the "bling"

Thoughts?