Can a Phantom 2+ Vision be converted to the Phantom 3 newest edition? If so what need to be done and what are the costs. Can I do it myself or does it have to be shipped to have it converted?

Cost to upgrade to even the most basic P3 would be more than the cost to purchase new. Everything with the exception of possibly the shell and props are different including the batteries....

I agree this would be nice but these things unfortunately are not Lego's..

No way to do it the components are different and different mounts. Sorry but a standard p3 now can be bought for $499.

it is not possible, i'd recommend to get the p3 straight away, with warranty and ready to fly