Get your hands dirty. The simplicity of a SS/Fix is that there aren't many parts which means less work. You can overhaul the whole bike in a day. Here's another good/cheap tool set:
http://cgi.ebay.com/ws/eBayISAPI.dll...124282279&rd=1

It has the added bonus of a full set of cone wrenches and a cable cutter.
But I guess if you're worried about chainline and a true wheel, pay the extra.