I'm going to be at Ky Lake in a couple of weeks also. I think what I will find is plenty of crappie in the pre-spawn mode (plumb full of eggs) just like I find them every year.
I know I'm going against the normal way of thinking but I just can't see that water temp being the only factor in the spawn. It seems to me that time also has to be figured into the equation. Crappies start developing their egg sacks in the fall and it seems to me it would take a certain amount of time for the eggs to be fully develop to be ready for the spawn. I do think fish do react to temps but probably more in relation to food and it's movements.
I've been hearing for years that the black crappie have already spawned at Ky Lake by the time I get there in mid-April. Every year the only black crappie I catch that aren't full of eggs are males.
This will be an interesting year. Only time will tell.