Yes, the stacks are definitely good for pwning the bubble, and K6s has a lot more equity when called than you need, given how many folds you will get from regs.
It helps that the big blind is the second stack rather than a short stack, so that no one is getting great odds to call you. It helps that the 3rd and 4th stacks are close to equal. That means they both have a decent chance to make the money if they fold, and so neither will be eager to take a stand. Also, you don't just have the chip lead, you have a run-away chip lead. You will not only survive, you will be in decent shape even if the second stack can call and double up through you. That means you are not very risk-averse, so the blinds you can win are worth a lot compared with the risk.