Hello!
Could I wear epaulettes/uniform (not full regalia...) ?
You are a lucky man who lives in a free country, so you are free to wear whatever you like! I have flown commercially on piston twins for more than ten years and have never worn a uniform or stripes. Always thought it was inappropriate. And no tie either. Dark pants, white shirt and a blazer when meeting the passengers in the terminal.
Now they make me wear a „real“ uniform with stripes, tie, name-tag, wings and crew-badge (no hat, luckily...). Coparing the workload and the difficulty of the job, it should be the other way round. All I do now is checking that the copilot presses the buttons of the autopilot in the right order. One does not need to wear stripes to do that... Whereas operating an ageing piston-twin single-handed and looking after everything else alone really makes you earn your stripes. So if you feel at ease wearing them, wear them with pride. All four of them. Flying is never going to get as demanding for you again as it is now.
Happy landings,
max