it's currently saying : "consider choosing your fee manually or wait until you've validates the complete chain"
Is 0.00001000 BTC as a fee ok ? What would you recommend ?
thanks
So you haven't synchronized your client yet? The error usually only appears when you're out of sync.
You shouldn't send transactions till the Core synchronizes completely due to the potential lack of information. Just wait till it synchronizes and your fee estimation will work.