Howdy fellas, I'm new here but I've been creeping for a while, I just have a quick question about suspension lifts. I have a 2008 F250 4x4 and I currently have a 2.5" leveling kit from ready lift and f350 blocks in the rear, and I was looking to go higher with a BDS 4-link system and I'm torn between ordering the 6" with leafs or just ordering the 4" with leafs and combining the 4 inch with my 2.5 inch leveling kit. I was just looking for input on the safety and effectiveness of combining the two lift kits. My leveling kit includes the coil spacers, trac bar drop bracket, and shock extenders. Merci!