Another pinion angle ?

Just set it at 3 degrees down and let it go.
PLUS, can you get that 4-5 degrees on the trans to drive line to match?
SS springs don't need 4-5 and the only reason you might need that much is at the track.
The rest of the time your U joint will be twisting way more than it needs, and very likely will cause a cruising vibration.

BTW, without a snubber I was snapping shock eyelets off and with the snubber 1.5 inches from the body it doesn't do that any more.
Here again though, you have SS springs which don't wrap as much.