Umm 24/90 on a stampede is not considered high geared now a days. I'm not getting a volcano, I'm getting a Tornado EPX 4wd Buggy pay attention. I have the Feigao 7S you know this from my other posts.
The load on the motor will not be affected by 2wd or 1000 wheel drive if the 2WD and 4WD have good traction on start up. If the 2WD slips and decreases the load on the motor it is the same as taking the 4wd kit and reducing the initial current draw via my program card and esc, something you can't do with the redcat esc combo.