Dburke: Nice looking handle. The FN one piece bases will work, though most of them will have a notch to clear the stripper clip hump. I would suggest two piece bases unless as you said you just want a one piece base. I like the Weaver style bases and Leupold rings, and use them on most of my rifles.
Brownells has several makes of safety's for the mausers.
A solid pilot reamer is fine, and unless your planing to shoot extra long bullets you don't need a throating reamer.
Looking forward to your pictures. (I'm taking pictures of mine if I can figure out how to post them.
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