you have to admit that this is a little risky...
you put 234 in 2 races....
profit: 141
risk: 485
ROI: 29%
try this....
Lay all your selections, fixed stake of 10.... the odds are not so high
profit: 55
risk: 306
ROI: 18%
just change one of those 2 races .....
so, i'll keep an eye on your selections
good luck!