I have run your basic rules over the past 12 months with one exception.Last start only +/- 200.results as follows:-
Meetings considered : 223
Races selected : 343
Horses selected : 417
- Number that won : 33
- Strike Rate/Race : 9.6%
- Strike Rate/Seln. : 7.9%
- Place Strike/Seln.: 26.6%
Return at $1/Seln. : $409.70
- Average Win Div. : $12.42
- Absolute Profit : $-7.30
- Profit on Turnover: -1.8%

I then added:-
1) 1100/2000m
2) good track only
3) age 4 years plus
4) Last start 9/36 days
5) Last start SP maximum 16/1

Past 12 months results as follows :-
PS. The Tri - ex and quinella results are for my infomation only when I couple the selection with other horses rated from my program.

Not bad for such a low strike rate.......

Cheers.....