Hey,
The stock is 1.82:1
The 4.24:1 is not too low (if there is such a thing).
But I run around in low range in 2nd or 3rd gear and it is just about right. 1st gear is just for showing off
I have stock 5.12, 5spd, and the 4.24:1. I am just a tick under 80:1 running 30" tires
And no kidding, whether you install the gears yourself or have the case built like I did, have them leave out the shift shaft detent ball. Get the twin stick kit from Stan (37kicker) or from Rock4x Fabrication (RockRat) for like 70 bucks or something (I bought Rock4x's), and you will not regret it---this is quite possibly one of the best mods I have done as it is one that I use most often---the only downside is that the case MUST be split to remove the detent ball.
I love being able to crawl around without having to lock the hubs OR know that I am putting extra unnecessary strain on that front end---sometimes I just want low speed but don't need to lock up.
Then go get a $20 Dana 300 twin stick boot, can be found online from various places, I bought local from 4WheelParts. Part number is 18606.06 by Omix-Ada.
Then use your laser etching machine to cut out and make a fancy cover plate for surrounding the shift boot (see attached)!!!!!