Apple tree rootstock cultivation

I plan to grow many apple trees from seed, plant them out and identify the best growing trees on my block of land, to, essentially find the best rootstock for my land, then cultivate that rootstock, and then graft known cultivars.

Thoughts welcome.

Growing from seed is a nice idea, but I would suggest that you also take advantage of all the work that has been done in rootstock breeding programs and test out the more common rootstocks on your property. For around $250, you could get 50 each Coppenhaven Nursery's five largest types of apple trees. As an added bonus you'll be able to graft in the spring of 2017 and get apples a full year earlier.

Thanks John
I wonder if anybody in Souheast Australia, the cradle of Permaculture can suggest a rootstockist?

Ah, Australia.
That complicates things because of the import restrictions.

Here's a permie in AU that might give you some good info to start working with:
http://www.petethepermie.com/fruit/rootstocks-for-the-apples/

Or, if you want to read up on what's going on re rootstocks in AU, try this Free 28 pg PDF