Setting up Pinion Angle/ Carrier Bearing

Hey Max, quick questions.  I have a two piece driveshaft I'm installing into my truck.  Here's some of the angles I have at mid travel (also ride height).
 
Transmission is level @ 0 degrees
1st Driveshaft points down @ 8 degrees
2nd Driveshaft points up @7 degrees
Pinion points up (meaning if I drew a centerline from the front of the pinion to the rear it would point up) @ 6 degrees (According to my measurments the ideal angle for my pinoin would be to point down @ 1 degree).  ISo, I'm 7 degrees off.
 
I understand that if I wanted to truly cancel out these angles I would probably need to change the angle of my transmission or pinion, but my questions is on a vehicle with adjustable suspension, are these angles good enough?  i've been in a ton of trucks where the fabricator didn't use any guidlines for correct pinon and they all seem fine.  At this point I'm trying come up with a good height to mount the carrier bearing so that center point is able to move up or down (inreasing or decreasing angles, but all relative to eachother so it doesn't really help cancel out the angles any better).  What side effects should I expect (if any)?
 
Thanks for your input (or anyone else who answers this post).

I played around with my carrier bearing height and tweeked my pinion angle a hair.  Got it a little better: Transmission is level @ 0 degrees1st Driveshaft points down @ 10 degrees2nd Driveshaft points up @10 degreesPinion points up @5 degrees This it so I'm off 5 degrees (that okay?) Is there any kind of rule of thumb?  Like try to get it within 'X' degrees?  

do you not have any way to change the pinion at the rearend only?

I have plenty of adjustment in my 4-link arms, but I have the lengths totally dialed in. At this point all my 4 link brackets and watts link tabs are tacked to the rear end.  If I rotate the pinion I will have to cut those off and reposition them...which I would like to avoid, but if you think it's necessary then I won't hesitate for a second.  Thanks again for you advice. -Aaron

Well, I can't say difinitively, but it sounds like you should point the pinion down about 7o

I ended up cutting the tack welds on my axle brackets to point the pinion exactly where it needed to be.  Thanks for your help. -Aaron