Good stuff, and good question.
I would suggest that you start with a cache, then add a cache, after that develop a cache.
Basically, bury stuff there in multiple locations. You want to be able to arrive naked at your location, starving and injured, yet be OK.
The ability to arrive naked should not be underestimated. While everyone else is packing their vehicle, you are already driving. While everyone else is trying to figure out what to carry so they can survive as long as they can (and fail), you have minimal gear for a short walk - and really don't even need the gear. In other words, your bugout kit could be a bottle of water instead of a 70 pound rucksack that won't get the job done anyhow.
I suggest this as a first step because you can handle this yourself with minimal financial investment and have it done quickly. While you would of course want to add a house there eventually, that will take the obvious serious investment you may not have. Because of that, you may be tempted to put it off.
The fast cheap investment of a cache system on the land will change everything, and can be done over the course of a few weekends. It can turn your bugout plan from a raider-survivalist plan into a true survivalist plan.
I would suggest a system of around four caches.
1) Arrival Cache. Place this some ways away from your planned actual camping location and primary caches below. This should have about two weeks food and other 'naked arrival' supplies. The idea is that this will be an easier to access cache and would be occupied and used upon first arrival while you recover from the trip, deal with your primary location being occupied by some other bugout survivalist, or any other number of reasons that you would want to access some immediate gear without yet exposing your primary cache.
So we are talking some food, basic shelter (like a cheapo tent), some clothing. Nothing too fancy. Maybe some ammo so you aren't tempted to try and carry a million rounds. If you have a cheap rifle this might be a good location for it.
But nothing long term key that will be needed, you want the additional ability to totally bypass this cache and not need to later access it.
2) and 3) are your primary caches. I would suggest that you split your primary 'stash' between at least two separate locations. The idea being that rather than exposing all of your supplies you simply use one cache. The intent being that if you are forced to bugout from the bugout, you retain the ability to return later without having lost your entire supply.
In reality, the way you would want to do it is that each weekend you work on your cache system you would probably just build a new cache instead of digging up one large one and then hoping to hide it, and the new stuff, and the end of the weekend.
4) Runaway Cache. In the event that you have to bugout from your location you will want to retain the ability to do so 'naked'. Basically, build a mirror of your number one cache.
Both the 1) and 4) could, and maybe should, be located OFF of your property.
YMMV,
Chad
YMMV,
Chad