Real good questions hear. Stagger – on open diff car , it is a waste of effort. The differential is doing its job and tire size will not impact the drive motion at all with this setup. Are you running stock diff or Ford 9 inch model?
But...you can use stagger on right front to add or take out wedge or cross weight. So when you are tire matching keep this in mind and 1/2 inch will do some good for you. Now back to the spring thing...wedge bolts or jack bolts are for
at the track FINE TUNING ...period. If you go to the track without knowing where your Roll Center is and what's base line spring rate be you have no business cranking on a stupid jack bolt!

..
You have restrictive rules on weight jack bolts..ok..use the stagger to tune it. You can buy spring rubbers to add more rate.
Sway bars ( anti roll bars) ..get as many different ones as will fit and know their spring rates and swap these out at the track until you figure out proper spring package. Shocks...you should have a good base line on these but I assume nothing and we can revisit later. Not knowing all the rules you face all I can do is suggest.
I recommend you spend the $ 100 for Roll Center software. Measure the car, find out where the Roll center is.. Next , before you do anything, look at the rules to see if you can change the roll center height, legally. As a minimum, change the Front RC location to offset it to the right to plant some down force on the right front tire. Then see if you can drop the front RC and still keep it 3 to 3.5 inch to the right. When we drop the RC we kill off camber build and the jacking effect on the right front. Rear RC should come down as well and again depends on rules and you can get different spring heights and spring rates as the software tells you.
Next work on eliminating bump steer and know your camber build curve over +/- 3 inch travel.
More tips are to concentrate your efforts on going after big chunks of things like horsepower. Do look at a trick 2 barrel carb ( why put on a 4 bbl. carb when the tires can't possibly hook up.)
Hedders are good, after market ignition is good if..if... you have battery big enough to run the car all night without the alternator. I like a point eliminator type distributor kit like a photo cell and straight coil..no CD ignition. Simple and easy to trouble shoot at the track. In fact , forget roller rocker arms, big intake valves, trick engine stuff.. just the basics..keep cost down for more tire money. Spend it on brake caliper upgrades and better lighter rotors. Add brake bias pedal so you can dial in front to rear brake bias. Eliminate all the rubber suspension bushings and replace with brass or aluminum. But I am sure you fellows are already on top of this..my point is to show the newbies some areas to improve..economically..