Beginner

[joey-TC]

Hello all. My name is Joey Jaeger and I am in need of any information anyone is willing to give. I race dirt modifieds in Wisconsin and I share a mini stacker trailor with my brother. It weighs roughly 15,000 lbs. I need a toter for the hauling of two cars to make sense. I need nothing too fancy like a Wildside, I would rather take a stab at it myself. I bought a 1994 Mack Ch613 w/ a 350 hp V-mac engine. I plan on a 20' or 24' box. The wheelbase from front to rear axle in rougly 216". First question. Is this an ok starting point? Or should I be looking for a longer wheelbase (i don't want to have to move the axles) and more power? Cost is an issue this time around. Thanks