Awesome info,
Can't believe cheap prices from stepperonline, its like AliExpress
I shall name my firstborn after you...well maybe not

I was going to go for Nema23 (269oz.in) but weight is 1.2kg whereas Nema23 (178.5oz.in) is only 0.7kg. Less weight equals more stabilty, is 178oz.in enough?

Did you have much issues for getting the basic assembly square?