The wingtips are fine. Wear the bowtie. I don't agree with the guys who favor the lay-down collars. I think they look dated.

Please don't wear black hose. They look awful. The shoes get lost on the end of them. If you want that much black on your legs, wear pants.

As for the sporran, I'd get an inexpensive formal one, fur with a chrome cantle.

Be sure to post pics of whatever you come up with.