I was going to suggest about 3deg anti dive for that low C of G and the short sidewalls, but 4 as you have it shouldn't be a problem.  Sounds like you have the rest pretty much ironed out.
		 
		
		
		
		
		
		
			
				__________________ 
				Ray Kaufman-Wyotech chassis fab instructor 
Custom suspension design and consultation. 
(Now 2) Big Block asphalt supermodified ('cause too much is never enough...)
			 
		
		
		
		
		
	
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