Here's a few pic's of mine. It measure just under 16 3/4 inches from ground to flange.
The other thing to consider is how much you will have to rotate your front axle for proper drive line angle. I'm not an expert here so I may be in over my head but I think the rotation of the front housing can effect steering and death wobble issues. Which I believe is why some resort to cutting and turning the bells or knuckles on their front ends ?
imho, yes the high pinion front diff has been worth the money. I personally have never had any problems with mine and I put on quit a few trail miles every summer. I did have Rocky at Marlins set mine up.
Pay the professionals to do it right the first time...