I have that exact trigger. It is quite complex, but has been extensively tested. It can hit some big price winners, but as you will be aware, when it does, all selections will probably Dead-Heat - so I only suggest backing the Probable Loser and possibly the favourite also, in case the dead-heat doesn't occur.
Like all other strategies, I don't think it will make a long-term profit if run continuously.
I spent a long time coding it so I would want 60 GBP, without support, or 100 GBP with support.
I coded it before the new conditions: Incomplete flush or Incomplete straight were available, I'm not sure if these can be applied just to the community cards, perhaps Tim can advise. If they can, then that would just leave the FH condition to be created by someone, if you don't wish to accept my offer.