Good method!...., with the potential to be a profitable venture in the long-term. Both trainers are potential up and coming stars and are producing many quality runners.
However, could I suggest that you consider an investment strategy of 1unit for the win and 5 units for the place? On past results it showed good results. I utilised a similar method with my Brian Mayfield-Smith plan some years back and it was so successful it attracted the attention of a prominent magazine.
Good luck to you as with these two trainers I think you are on the right track.

Cheers.