Storing White Wine - in an non-optimal fashion

I know the best way to store wine - and am doing so for about 50 bottles of very fine red wine that will be stored for 2 to 4 years - but I am hoping I can take advantage of a recently un-used, small refrigerator.

The lowest temperature I can attain is 41 degrees. The humidity is around 50%. I would be storing white wines only, about 25 bottles - a few stored for a year or so, with most stored for 4 to 6 months.

So.... advice is most welcome.