Before you can hack a static website you first have to realize it is one and you need the motivation to do so.

My "audience" is motivated by it being very outdated software. If non of the exploits work they will think I've patched everything.

There must be more interesting targets out there?

If you are capable enough to hack appache the choice of target makes no sense.

My best security layer is that one first has to even find my websites. If you do there are plenty of better targets among them. From the business end however the most secure look the least secure.

It's a shared hosting account, if I try to send bulk email they will immediately unplug it.

That leaves only the glory of pwning the last instance of some obscure cms?

It would probably make me laugh? Everything will be back up within a week. Nothing of value is lost.