This is what I would design:
E-W streets north of center are numbered (1st, 2nd, 3rd)
E-W streets south of center are named for plants/flowers/trees alphabetically (Ash, Beech, Cedar)
N-S streets east of center are named for Presidents chronologically (Washington, Adams, Jefferson)
N-S streets west of center are named for the states chronologically (Delaware, Pennsylvania, New Jersey)