Hi, I'm trying to decide what size entryway table I should buy. The wall it will go on is 60.5" long. The wall is between to doors, one a french door to an office and the other a bathroom. It's across from the staircase. I'm going back and forth between a 36" table and a 42" table. Is there a rule of thumb? Also, I'd like to put a mirror over it and I'm not sure how big the mirror should be? 30" diameter? THank you!