MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Before you buy the fan I would try just the heatsink. I have that exact heatsink for my Pi's (use them for 24/7 SETI) and I don't think it needs a fan. You could always add it on later if needed.