For shits-n-giggles, let's get a frame measurement. Too much variable measuring to the flares. Measure where the rear lower control arm bracket is welded to the frame, right at the weld seam, and same for the front lower control arm bracket at the weld seam opposing the rear.
Also keep in mind, with that much rake, if you lower the rear by "x" amount, it will shift the weight in the front a bit and might actually raise the front a tad. So I'd lose the 10mm spacers in the rear first, then go from there. Don't go any bigger than 1" coil spacers. Going any taller than that just limits the spring. OME 2941 springs are actually taller than 2942's, but have 20 in. lbs. less spring rate than 2942's.
Also keep in mind, with that much rake, if you lower the rear by "x" amount, it will shift the weight in the front a bit and might actually raise the front a tad. So I'd lose the 10mm spacers in the rear first, then go from there. Don't go any bigger than 1" coil spacers. Going any taller than that just limits the spring. OME 2941 springs are actually taller than 2942's, but have 20 in. lbs. less spring rate than 2942's.