DEC is currently pumped and if you do not want to buy land then I will say this is right time to sell DEC or buy cards from market using DEC or convert them into credits for future use. (Don't buy packs and booster from DEC as they are always fixed at 2000 DEC).
My thinking is very clear on land, either I will buy big (a tract) or no land at all. So high chance If I Hive do not recover I can dump this DEC in market too and buy a single plot symbolically.