Starting to bag my 1983 Mazda b2000

Im starting to bag my 1983 mazda b2000 that i picked up many years ago. just been waiting for the day to start to bag her. i picked it up for $300 and she has 110,000 KM on it. So first thing is first i need some input on the best way to get your pinion angle perfect so i only have to install the 4 link once. if i make the tranny output level what should the pinion be at ride height? or is their a better way of going about this?? thanx for helping out and ill keep the whole built up to date on here.
://i30.photobucket.com/albums/c322/roddawg/IMG_3003.jpg

These are just a few guidelines I found when designing a 3/4/5/6 link..

1.Set pinion angles at ride height
2.Typically you want the degree of triangulation to be around 40 degrees with 45 degrees being optimal
3. While at ride height you want the lower bars parallel to the ground
4. Set the instant center near the back of the grille.
(Instant center is where you draw an imaginary line through your upper and lower bars and extend them out towards the front of the truck until they intersect. The point of intersection is the instant center.)
5. You want the distance from the upper bar frame mount to the axle mount to be the same length as the distance from the lower bar frame mount to the axle mount to reduce/eliminate pinion angle change through the range of motion.

Thnx for the input !! ill give that a shot and see if she works