It's wrong to look at a 4-bet line here with TT as strictly a bluff or value. What we're doing is taking advantage of dead money + fold equity + reasonable equity when he jams. It's hard to be "crushed" vs his 3 bet jam range when it contains 16 combos of AK and sometimes even has 99 88 AQ if he's really spewy preflop. I think with your read that SB is cold calling really wide here, this is absolutely fine, except for the fact that your sizing is ridiculous. Give them room to jam worse pairs and at least some illusion of fold equity.