I think your bug out drill is a fantastic idea. We often drill and practice our bug out.
There are a lot of bush craft skills you can practice, however they will be useless if you never make it to your BOL, or your killed when you get there.
What I recommend is what we do to force ourselves to plan and put into action all contingencies.
On the way to our BOL we select a road and make it off limits, forcing us to take an alternative route. In addition we select a vehicle, like a white ford truck. And whenever we see one we consider them hostile and choose an alternative route to go around, or pull off and take cover. It adds a bit of excitement and makes us think about our available routes. When we get to our BOL we check on our Caches, and update them as needed. Then we scout the area, and look for signs of others. We check our tells, and set others. Our BOL is extremely remote, we have never seen sign of others but we never take that for granted. We still study the terrain and discuss ambush points and lines of fire. Places of cover and kill zones. Security is paramount. It is one thing to have supplies to survive and it is another to keep them.
When setting your priorities remember the rule of three's.
We all know 3 hours of extreme exposure, 3 days without water, and 3 weeks without food.
But we rarely consider the most important 3.
You will last an average of 3 minutes without a vital organ!
Believe it or not there are people out there who are not prepared, and desperate enough to take what they need. Even if it means they have to go through you to get it.
So security should be your first priority, but false security is worse than no security. True security only comes through honest evaluation of your situation. I have three words of advice. Perimeter, perimeter, perimeter, if you wait until they're at the wire, it's too late.
C.T.Horner
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Thanks again C. T. Horner