1.5" level with 33's

[Dakotakid]

Ordered a set of 20x12 fuel octanes and 305/55r20 nitto terra grapplers, want my truck level but not to high in the front. Thinking about a 1.5" level or pulling the blocks out of the rear.
Opinions, advice or pictures be great.
Truck is a 06 F-250.