I too say go for the Ruger. I have one I won't part with. I also have two Buckmarks and a S&W 41. They get carried to the range more often, but I do like to take the MkII out when I'm introducing or working with a new shooter.
I'll probably catch the dickens for this, but here goes... I think a lot of folks over think the cleaning and lubrication of the, well, all rimfire pistols and rifles. I kinda keep the breech area and chamber clean, but I don't go all into detail cleaning a rimfire until it starts acting sluggish. The Army taught me to clean after every shooting session, but over time, I realized .22's don't really care all that much. Rimfire rounds tend to shoot dirty, but too much oil just makes for a thicker, heavier slurry that gums up twice as fast. True, there are some areas where a touch of oil is good, but you'll be surprised at how well they operate with just small amounts.
Every rimfire is different, you probably know all about buying several different brands and styles of ammo to find out which yours likes best. I don't buy plated bulleted ammo at all. I guess I understand it may help with higher velocity ammo to prevent leading or fouling, but that brings up another point. In the circles I shoot in, it's believed that non-jacketed target ammo that runs between 1050 and 1200fps will tend to deliver best consistency and possible accuracy if your pistol likes that particular brand, type, and lot number. I believe just about all lead bullets have some sort of coating that helps reduce leading- and lower velocity helps reduce that also. If the pistol is around 1985 vintage and hasn't been shot since then- and if the seller recommends a particular ammo- it may be worth looking into. However, for some reason, either the powder or priming compound has changed since then. I'm not the onliest one that's convinced .22 ammo just isn't as accurate as it was prior to the 70's and 80's. YMMV.
Good luck, have fun, and go shoot!