So, I upgraded myself to broken, the version in the OP (for me) has some bugs, causing a crash after around 5 min or so. I was able to create a new version with older builds that runs smoothly, but there are still a couple issues with missing NEI recipes and whatnot. Vacation's over, sadly, but I plan on getting a semi-stable version put together over the next couple days that I'll put in the OP.
Good news, sounds like the FTB 1.5 pack will be up this week (although it looks like Ars Magica is out), so with luck, I'll just be able to modify that slightly. If so, I'll post my results and give a link for my config. Again, my thanks to everyone who's contributed to this thread =)
Edit: Just saw DW's spotlight on Dartcraft. Definitely going to try and add that one. Skinning cows and chickens alive? Twisted, but hilarious and definitely useful.