I'm of the belief that every serious gun collector should have at least one Hi-Power. A true classic, feels so good in your hand and shoots wonderfully. JMHO its the best 9mm ever made.
I have a Browning MK III, a FEG Clone and one of the FM Detective Models.



If you want a .357 Lever gun, do it right. Find yourself a nice Winchester 92 or clone. Great rifles! I have one made by Rossi and love it!

Sounds like you have .22 rifles pretty well covered. So that can wait.

As for Rugers..... They make outstanding guns. But if you want SA, I'd say get yourself a Colt SAA clone.
My favorite Ruger revolvers have always been the old "Six" series guns. Excellent revolvers, accurate and tough as nails. They haven't been made for a long time, but still can be found at reasonable prices.