hilltopper55,
I'm in the same boat as you with a few more years as well....Using the factory sights on my Marlin 1895G is an on and off deal. There are days that I can do well with the Factory sights. Others.....well, let's just day the sights are there, but I can't see them.
I put a Williams 5D peep on the rear and it was like night and day! A real improvement and it kept the weapon looking like a levergun should... Williams makes a good sight and if I were to do it over again, I'd get the adjustable model, the FP...a few buck more but far more precise. The 5D is a good sight, but it takes a bit to get it dialed in. Once there, you lock it down and you're good to go....until you change loads!
I recently tried a Dot system, but that was a dissapointment.....but that's another thread too! Sure had high hopes with that thing...Oh well, I still have a short scope that I can use...
Good luck with you sight quest,
Wade