there is no an exact and global solution for all pairs.

analyzable pairs: eur/usd, us dollar index
others: garbage

it will be just a dream, your statistical model will work on all pairs.

there are two ways to make money here:
1. integrate 1 lot, (1..5) pips during the TIME.
2. integrate (N X 0.1 lots) during the TREND.

two type of summation cause you make money using leverage. without leverage, you can do whatever you want.

there is no magic solution that will work on all pairs and all times. start point: clear this dream, focus on some pairs. curve fit on them