I plugged those ratios in Anthony. Have you ever tried that combo with a 1.09 fourth? It tightens up the 4-5 shift, or it looks like it anyhow. Regardless, keeping the stock mainshaft with a 3.44 or 3.88 depending on where you live is where the smart money is.
I think if I lived in the mountains, I'd look pretty hard at Anthony's recommendation.
If I were doing a 5-speed, I might do this:
3.78, 2.06, 1.47, 1.14, .93, 3.44:1 R/P
but the one I put up a few minutes ago seems pretty good as well. I guess I need to start getting parts together...