I would buy something like this with its shock absorbing front shock and upright riding position and 40mm wide tires. The 40mm tires allow for lower tire pressures and a more comfortable ride with negligible loss in pedaling efficiency. On level ground the weight is not going to be a problem.
Or for a bike that is 4 lbs lighter there is this bike from Specialized that sells for twice as much. It has much wider tires that work better in very loose surfaces but are heavier than the ones on the REI bike.
https://www.specialized.com/us/en/ch...=319921-199640