554 after two days then
good chance of going through the guarantee, remarkably, it looks like
I thought it was guaranteed at £80000? which would mean it had to be full every day just to match the guarantee, so there will be an overlay - is that right or I have got it wrong somewhere?
80000 (guarantee)/50 (buy-in) =1600 (runners)
320 (runners) x 5 (day 1's) =1600