Those Kenda Happy Mediums look good for gravel and off road. If you mostly ride pavement and want good flat protection and low rolling resistance try Michelin Protek or Urban tires. 700x32 or x35 would work with those rims.

For comparison I run 700x40 Michelin Protek Cross Max on one bike with 622x19 rims, and 700x42 Continental Speed Ride (tread similar to your Kendas) on 622x19 rims on the other bike. The Contis run a bit narrower than spec, closer to 700x38.