This seems like a counter productive way to approach jiu jitsu. I'm aware of three really good options from the back rnc, armbar, and transition to the truck. Two of those being two of the three highest percent submissions in jiu jitsu and the third transition leaving you with a lot of options and control. Is your rnc blue belt level? Have you developed your squeeze? Is your hand fight skills up to par? Have you become good at eliminating one arm? If all these things are blue belt level then work on the next great options. When your armbar and transition to the truck is blue belt level or higher then maybe start looking for another option. I understand your trying to be creative I'm just saying, don't let it get in the way of your progress. That's just my white belt opinion though, take it for what its worth.