Have you experience in tricorn-era figures? How do you usually do those up? (As their uniforms are more complex than Nap). Do you have a blog?
The only tricorn-era figs I've ever painted, were Zvezda's Russians, of which I've painted a battalion of 30, as Saxon Guards. I do NOT find them more complicated than Naps. In fact, most armies of that period, lack that really frustating detail called 'piping', which is the norm from the French Revolution up to WWI, and which takes a huge ammount of my painting time.
However, painting 18th century Brits would certainly be difficult, with all that special regimental lace and the buttonhole distinctions. The trick is, I think, to start with easier-to-paint units first.
I also have a half-painted french unit of the War of the Spanish Succession (Zvezda Russians again). Primed black, with 2-3 tones of grey-to-light-grey. Up to now, they look great.
Which reminds me, I do have a blog, but there is almost nothing in it, as I have almost no units finished at 100%. Even my GNW Saxons I mentioned, need flags....