Time of course will tell, and one has to admire anyone going to that length but I have to wonder if the chain is a bit small. A five speeder is a lot porkier than any motorbikes I know of.
The chain on two and three speeders is 3/4" BS. Not as fancy as the type used here but bigger.
So the obvious thing now is to say, get some use in and see what things are like in a few thousand miles. We await reports...