Tournament survival is a little overrated except for some brief phases and situations around the bubble and when there are big pay jumps and you have a vulnerable stack.

From the time that late registration closes to the time that you are close to the money (and then again when you're in the money and there are very marginal or infrequent pay jumps), it's all about chip accumulation.

During the registration and rebuy period is so low risk/low reward that the best approach is a little up for debate and depends on style. If you're so fixated on survival that you're going to be limping AK, then you should really just max late reg and literally not worry about playing poker at all.

Otherwise (if you feel that playing the soft early field is +EV enough for you to chase the relatively marginal gains that are available at the risk of losing your stack) then just play your game and if you get busted then fire another bullet.

There's not really a scenario where you expose yourself to the blinds and vicissitudes of early-registration play only to play like a giant nit with the 3rd nuts.

Of course none of that is to say that always going all in with AK is good in any stage of a tournament. Alas, you will have to turn your brain on and play some poker...