I'm not saying drop it to 24" but you can get it a lot lower I think 28" would be a good height if you want tall on the 42's but that's just me. We do a lot of off camber rock crawling out here so high frame rigs tend to tip over on their lid.
It does have a lot to do with what you're wheeling on and while i do some off camber stuff it's rare and i end up in places i need frame height more than anything.
Dont get me wrong im not shooting for 34" of frame height i wanted 30" but the way it's looking unless i want to cut up stuff alot im going to end up close to 34" which doesnt bug me a ton just means ill have to be more carefull when i get to off camber stuff and or just use my winchs to take the height out of the truck. ill have front and rear mount winches so i can just suck the truck down and have a 90" droop suspention.