I have a mix template I created that already has my VCAs, Track Stacks, Sub Groups, and Output Routing. I import the tracks to the bottom of the arrange window (to NEW tracks), then I drag tracks into their correct TrackStack. It may not be faster; organizing mix sessions can be time consuming, but that is time well-spent learning what the arrangement has available to you.

My recommendation is to buy the latest model you can afford. Logic 12 is out and Logic 10 will eventually fall totally off of support and become End Of Life. Plus, many new features in Logic, some of which ONLY run on Native Silicon processor chips. While you COULD get the 2013 iMac... you'll have a hard time finding a supportable download (legally)...

@Marquita Sullivan That's probably the soundest distribution strategy I've seen in quite a while! Cut out the middleman...