The Owari and Kimbro are two different satsumas. The Owari is the better one in mho. If you want an extended harvest I would plant different varities with different maturing dates. Early, mid season and late maturing will give you fruit across the ripening time span. Be careful with lemons as they can be not very cold hardy. If you are speaking of in the ground outside plantings, pick sheltered locations and you should do OK.