Always good to hear from a young person aspiring to be a hotrodder and fabricator.
Please allow me to give you a grandfather's opinion. I'm building a 50 now.
In Greek mythology, Sisyphus (Greek: Ancient: [sí.sy.phos], Modern ['si.si.fos] (help·info)) (IPA: /ˈsɪsɨfəs/), was a king punished in Tartarus by being cursed to roll a huge boulder up a hill, only to watch it roll down again, and to repeat this throughout eternity.
Today, Sisyphean can be used as an adjective meaning that an activity is unending and/or repetitive. It could also be used to refer to tasks that are pointless and unrewarding.
The chassis is just too big. A Ranger might have been better.
Develop a better plan. It saves a lot of undue headaches.
Don't fall into the trap of doing everything the hard way, just because it is there.