+1, I'd also go 126mm, which leaves you the option of going to 6s.
However, most 126 hubs are set up for 6s, and changing them to 5s would involve transferring some spacers on the axle (if possible) and re-dishing the wheel. A 5s wheel on a 126mm axle is a nice thing because it's almost symmetrical, but it'll involve some extra work at your end.
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