And if they are referring to Corporations, what are the stipulations?

In doing so, the price will go up a little bit and the end date will, of course, be changed.Can this be done with a 1 page word document i type up stipulating that all terms of the previously signed lease are in effect with the end date being x/x/xx and the new monthly rent being $x,xxx.00?

The terms also stipulate interest payments of 11% right away and 3 points which can be added to loan. 

If awarded home, invest 80-100k in renovations and sell for ~250K, following 1 year occupancy stipulation.  

The only stipulation with the VA is that the property has to be a primary residence for so long

you can do one of several things. you can include electric in the rent (not always a good option) , you can stipulate, in the lease, that the electric bill is split 50-50, you can implement RUBS which divides the bill into the percentage of space it takes up (for example one side is bigger so they pay 60% of the electric, or the 2 bedroom pays 66% and the 1 bedroom pays 33%), or you can submeter the electric which allows you to split the bill you receive according to the actual electric used, finally you can discuss with your electric company what needs to be done to add a separate meter to the duplex. submeter and second meter are most expensive options, but in my opinion are the best for your long term sanity and profit.

For instance, if someone buys a condo to rent out, usually the CC&R stipulates the HOA must approve.

They had a stipulation which you agreed to, if you are asking them to pay your closing costs that could easily add up to quite a bit of money. 

Of course....just stipulate that you are allowed to use it!!!

The only stipulation I would include is if you decided to sell at open market we benefit from the upside just like partners should.