Yea the deavers tend to ride a little rougher, and also are made for more long travel. However, using the skyjacker leafs compared to doing blocks and aal's will give you probably more than enough travel.
To match the Superlift + coils you could use the 6" without the factory block, or 4" with the factory block.
Here are the 4" leafs let me find the 6" ones...
2003 Sonic Blue FX4 Supercab 4.0L Auto,3" BL, Hybrid Superlifted Front with T-Bar Delete replaced with ORW Coilover Fox Conversion, SkyJacker leafs w/Belltech Shackles and Fox Emulsion Shocks, 16x9 Moto Metal 951's wrapped in 35/75/R16 ProComp Xtreme M/T's,
AEM CAI, SCT X3 Custom Tuning by BamaChips, Custom Cat Back Dual Dumps
HID Headlight Conversion, Every exterior halogen bulb upgraded to LED
....small stuff here and there...