growing Christmas trees for market

Hey y'all I'd love to hear any experience with or ideas for growing christmas trees using permaculture methods on a small farm.
We are in South Carolina, zone 7b, heavy clay soil, on a 7 degree/10% slope.
I'm thinking of growing on mini swales filled with wood chips with support species like indigo.
what other support species for the guilds? layout ideas?
looking at doing 1/2-1 acre area.
Thanks in advance!

Did you see this thread Anna Marie? Growing and harvesting so as not to clear cut an area. Could be especially useful on a sloped site I suppose.