i dont see it working sorry. you say that when you are leaning back after getting the kimura sandwich hold that if he kicks his leg out you can stop leaning back and then swing your leg over into mount and get him with the kimura before he is ready to defend again? i can see an absolute beginner get caught in this possibly but i dont see a how it would work against most guys.
secondly, the size difference has to play a roll, if youre rolling with someone in your own weight class, i dont see how one arm with a loose looking grip can control a leg. even adding in the fact youre leaning back and therefore using your back muscles. thats one hell of a fight right there. especially when he is already going to be trying to go the other way to defend the kimura.
and then you had side mount but you give side mount with a submission attempt up for top half?
i also think that your kneebar allows for a pretty easy kick over which could put your opponent into a bad north south position with you on the bottum. all he has to do is swim move and kick his leg out and it at least causes a scramble and means you almost definitely lose the sub. thats why i always try controlling the other leg as well.
i want to see cool stuff like this be able to work but atm at least until legit comp vids are put up, im gunna stay very sceptical here.
good luck with it all.