Sorry for not replying sooner.
Recently I've started to transfer my workflow from my 7 year old Windows computer (which was considered very powerful in its day) to my new high performance 15 inch Macbook Pro. It's a gigantic step up in terms of performance, that I honestly REALLY needed for this project. Apparently OS X's new version in the fall will also introduce a new graphics engine that should multiply AE's power quite a large amount as well. CC 2015 just released the other day, so I'll see how that might improve things as well.
I've been busy with several official projects, that it has slowed me down a bit, but for now I seem to be relatively free, though I currently am on vacation atm.
After I finish reinstalling all the stuff I need on OS X and figuring out the best way of managing the storage necessary, I'll put out a new video clip for download, specifically in 4K to garner whether it would be worth it.
I am going to be trying very hard to get it accomplished by the release of TFA.
Also, I couldn't remember if I had asked this before, but are the PAL releases of PT deleted scenes are natively higher res, or simply upscales from the NTSC. I misplaced my current DVD's, so I was going to have to get a new set, ugh.