This looks like a fantastic project.
Do take the time to read the user comments – the insights can be very useful – for example:
Magneto is the slowest shopping cart I have ever tested, it’s also almost impossible to upgrade without crashing your site. Only Magneto’s pay version will be PCI compliant which means if you use credit cards you will either have to buy their $500 version or pay higher credit card fees. Avoid this crap at all costs.
Useful to know…