What's the issue with a cheapo kit for the intended light usage?
Nothing! (though maybe not the real cheapy ebay stuff)
Ignore the sniffy replies here and go to fora containing real life experience - pedelecs and even (whisper it) CUK which has a fairly active e-bike sub-section.
Full disclosure - we have 3 Yosepower systems (2 rear and one front hub drives) and one Swytch - they all work well (>2 years) and cope with the 15+% Exmoor terrain fine (with rider effort)
More of an issue is supply atm, particularly from Chinese firms like Yose, who previously used warehouses in EU.
UK suppliers like Whooshbikes have a good reputation for customer service and are good for advice.