Temporary floor fix - Ikea laminate on concrete and wooden boards
Is this over a crawlspace?  Fix your dampness and ventilation problems first before you invest a lot of time/money into the cosmetics.  You will probably find more issues.  Why do you want to do this twice (now, and again in a year)?  My suggestion is to do it right, once.

Concrete shrinks as it cures, so cracks are probably only a cosmetic issue.