Wow, $15,000 is quite alot of money thesedays ..
If I would have to take such a decision, I would go with something offline and there are few reasons behind my suggestion.
First of all , we all know that nothing on Internet Marketing is safe for our whole life, or at least never safer than offline stuffs.
I don't really know about your country standards or how useful $15k would be , but if it was for me .. I would invest them on a business.
I would suggest you to start a shop , small restaurant or anything else that fulfills the society needs !
For my opinion , even being a barber/ shaver is more safer than owning a website !
I mean , it's something that never ends .. while on IM , you never know if there comes a new panda update, or a new SOPA / CISPA ..
Best wishes mate ..