Looks good, let us know how it shoots.
I just thought I'd let you know about one of the quirks with my Ruger Mark I target with 5 1/2" bull barrel. My pistol will not feed the top round out of the magazine with the slide locked back. If I insert a full 9 round magazine and pull and release the slide it will chamber every time. To lock the slide back, pull the slide to the rear and flip the safety from fire to safe. Moving the safety from safe to fire will release the slide. The slide does not lock back on the last round, if you need ten rounds feed one round into the chamber and top off the mag. Magazine capacity was never an issue for me when I first started shooting. The Ruger Mark I was my first gun, my Dad bought the gun for me with my money since I was not 21. I will never sell my Ruger Mark I and hopefully neither will my kids or grand kids.
My Mark I has digested many 10's of thousands of rounds since purchase in 1973 and has been very reliable. The Mark I can be a pain to disassemble for cleaning. For routine cleaning a bore snake comes in very handy. I will take my Mark I apart now but it can be frustrating the first time or two. Ruger has videos as others for reassembly of Mark I's if you have difficulty. Overall great accurate guns they just don't make them like that anymore.