One or two hours? Sorry but I don’t think you realise exactly what’s need to be done here. It’s not like some other kit which are partially assembled, and the assembly process is probably the main key part to get very good print quality. Can’t recall how often I’ve seen people trying to diagnose some print errors while the issues were not due to calibration or settings but due to assembly, so being focus and taking all the time you need for this process is crucial as it isn’t like assembling some IKEA furniture. Does 30 ish hours sounds a lot, yes but if it the time that person needed to do things correctly because of its lifestyle and knowledge/confidence, that’s perfectly fine. Would some other do it in way less time? Sure, but maybe they have mount several before and know exactly all the key points to look out, they will recognise every single piece on one sight and will need way less time to think about the next step and how to do it correctly.