The 10 ball looks right on the edge of being usable. It depends how the WEI graphically represents the rack area. On a standard table with lines drawn for 14.1, you must remember that the corner ball will be quite a bit to the
inside of the line. I'm not sure if the WEI does this as well.
OK, I just checked, and it looks like WEI does this. Because of this space, to me it looks like the 10 is unusable, as you won't be able to hit the rack.
Even if you could just barely clip it, you'd only be hitting the edge of the outer ball, which I don't like. Not enough energy is transferred to the rack, and the cueball will really go flying.
I moved the 5 because your original position of it would lead me to hit a bit too much towards the inside of the rack. It looked like the original position would have the cueball strike the 2nd ball on the inside part of it - I would rather hit between the 1st and 2nd ball or at least towards the outer part of the 2nd ball.
If I had to use the first position of the 5, I'd possibly (I'd have to see it live to know for sure) play it with inside to go 3 rails. As pretty as that shot is, I find it to be more missable and more subject to bad kisses than the standard outside english shot. As our goal is to run balls, not look pretty (

), your original position of the 5 was one of the reasons I would have stuck with the 6/2 options. It is a very minute difference between our diagrams but in my mind it changes everything.
When I am looking at an open table and I find a ball lying
exactly where I like it under the rack, with a nice end-pattern available to get to it, I will choose it over most side-of-the-rack breakshots. That is how effective (and easy to play for) I find these balls.
- Steve