Good thinking! You Mimicked the stock fixings, now you only have bottoming out the spring or shock to check for, the wheel travel will be more than the apparent shock travel, the problems get bad when you want to run very low because the spring is on the limit length wise even at the stock ride height, they can become coil bound, this is why very low race cars move the shock, effectively trading droop travel for more bump travel, in other words, raise the upper mount, the off-road boys have seen the problem on the Baha bugs and tube frame buggies. Please don't think I'm dissing your build, far from it, just my findings as far as running low goes, most street builds will be o,k but it won't hurt to know what really goes on with the suspension, my car bottoms on the spring plate fixing bolt heads, and it still needs to go down another inch! Ideally it needs the torsion tube raising up, and the shock towers axing completely, exactly what Porsche had to do to get them to the proper ride height ..you will overcome it I know