I bought my first in the 70s, a custom made .45 with a Siler flintlock...I hunted exclusively with that gun for 15 years or so...I then built a .54 and until this year have hunted with that although I do use other guns as well now...

Nothing wrong with a flintlock, you just have to know how to take care of them and keep the lock and pan dry...When it rains, I simply carry it with the butt under my coat and lock under my right arm...

On the sights, I feel your pain...I haven't used mine this year because of cateract surgery this summer...Before this I had widened the rear sight and used a 6'oclock hold and was pretty good...I'm going to work on the sights this summer and see if I can get something else to work...

Good luck, enjoy...