Expiration for Reds

[RosesWine]

Wine room is in basement, 8x9, with no heating/AC vents, door closed. Temp @ 50s in winter, 60s in spring. Don't know yet for summer since we haven't gone through one yet, probably low 70s. Have wine racks to hold 40 bottles and plan on buying a small wine cooler for transition. Not sure though whether I should considering the low temp in wine room. What do you think?