Just a quick note regarding "PLA asking for only 60 watts alim" : with large parts, I believe you still need a heated bed for PLA.
On the main page, it says M6 x2 , M3 x 16.
Are the 2 and the 16 lengths or amounts?
Either way, what's the other number?
And what is needed in the way of nuts, washers, and the like?