Why move up from 10's to 30's? There's a whole level of 20's.

Just general thoughts.

For every time you lose to a guy who's a 75-25 dog, you will win 3 times.
If you win the first time, you have a big stack and even if you lose the next one hopefully it's against a smaller stack and you're still in it.

I would rather play against people who do not have a clue. Let them suck out on occasion and move on. Get the suckers in your notes, and hope to play against them again. If they're that bad, they're going to have an ITM way under 30%, so in the long run they're paying you.