First off, I think they're both extremely expensive deals bro - - - Last I checked, all this stuff [full kit, advancer, emulator etc etc] was costing around 35, inclusive of fitting etc. . . That was around a month ago...
Secondly, a friendly word of advice: do NOT install cng if you've got a ride with an auto tranny; it totally cannot take it and will royally screw your happiness... I had to remove and sell mine off after less than a week...
Lastly, I don't think you'll need to elevate the suspension as it's much stiffer than your average [civic, rolla, liana etc] locally manufactured rides, and barely gets affected by the cylinders... I certainly didn't need to do any elevation scene for my 55k cylinder, and don't think you'll need to either...
Best of luck...