One thing to mention regarding advance, you can adjust the msd pro billet advance bushings so you can get more initial advance and also maintain the appropriate total timing. I see FBO sells a 10 and 14* bushing kit so you can get 22-26 degrees initial without running your total timing too high. I'm looking into getting that kit myself. Also on a side note, your wagon is sooo nice. It might be my favorite car here. Good luck w the getting it all sorted out.
I sell those CNC bushings as well... not near as costly either.
JMO and agree with other, it likely needs to more timing under cruise situations. One problem with big cams is the low vacuum signal and finding a can that will activate with 10in or more vacuum. Lots of the cans won't do much of anything until 15in.
At idle you can clean it up with more initial timing in most every case.
