I just found out i had 13.8 CLAMS, is staking feasible with this amount?...
Move your mouse over the ticket icon on the bottom left corner of the clam client. It will pop up a message on the expected stake time.
The network weight is currently showing as 742000.
Divide that by your number of CLAMs to get a number of minutes per stake.
Divide by 60 and 24 to get an expected number of days to stake.
I get 742000 / 13.8 / 60 / 24 = 37.33 days.
So it's "feasible" but probably not worthwhile unless you were going to be leaving the computer on all the time anyway.