A Mountain bike,gravel bike or adventure bikepacking bike is what you are looking for. You want bosses on the rear for a rack for sure. Ability to add a front rack would be great but you will only get that without a suspension fork. You don't really need suspension since I wouldn't expect you to be jumping off the hills. Wider 2-3 inch tires will give you plenty of suspension.You likely need something 56-58 cm or a 19-22 inch in a MTB. Ride a couple at the bike shop and then find something used close to what you like. You won't be taking advantage cause you will need new components all the time for any used bike anyway.

Last edited by R_H_Clark; 11/17/20 07:03 PM.