How to set up the cycle computer for the REACH?

The recommend value is as belows:
Kenda K-1047: 1610mm
Primo C1081: 1595mm

How to adjust REACH\'s suspension?

You don't have to adjust REACH's front suspension. As for the rear suspension, you could change harder or softer PU.
Find more info here: Support>Download>REACH Rear Suspension maintenance manual

What is the height/weight/luggage limit of riding REACH?

Front carrier weight limit: 10kg
Rear carrier weight limit: 15kg
Maximum wight limit(rider, luggage): 110kg
Suitable height: 145-185cm