Apologies if this has been thrashed to death but I couldn't find anything when I searched.  

I have a Arsenal SLR95 that I really like (even with the stupid thumbhole stock).  My eyes are getting older though so I rarely shoot it because I can't get a good sight picture.

I have thought about replacing the rear sight with a ghostring and also thought about a red dot.  If I go with red dot route though I will need to find a mounting solution.  I really don't want to spend a lot on this project so I'm leaning towards a new rear sight.

Any recommendations on an aftermarket ghost ring sight?  
If I go the red dot route, what rail should I add?

Thanks in advance for any replies.

I like the Attero Arms red dot mount. It replaces the rear sight leaf

Thanks!  Looks interesting.  Which Attero mount is that?  Also, what sight is that?

It's the Attero Rail mount and an Aimpoint T1

They have a T1 dedicated mount but I may move my MRO over to this rifle and don't want to buy multiple Attero mounts