If you enjoy playing sngs, and you $/hr is higher (and thats something you care about right now) then stick with those and mix in some cash when you feel like it. I feel that there is more of a shot at making a higher $/hr at cash once you get to a level that is high enough, as the sngs continue to get dryer and dryer as you move up, but there are still enough fish (apparently) at 100nl and possibly 200nl. Its totally up to you though, and whatever you choose, make sure its right for YOU.

Good work on the roll building sir, keep up the grind.