Nice scoot!
I started on a Go Ped at 14, then some one stole it out of my garage and I saved up for a 1991 CR125 by the time I was 15 1/2.

Rode and did track days as much as I could til I was 19, then got into riding on the road. I borrowed my aunts Honda Rebel 250, then eventually got this shit heap of a 1977 GS750 for $500. The rear fender was a bit of school binder folded over and stapled to a wood frame, the seat was a bit of couch arm rest cushion covered in vinyl sitting on a wood plank, the side panels I made from some ridiculously thin gauge aluminium.
Scary looking back how much faster the bike was than the brakes could slow it down, also the first time I touched the non-folding pegs down while leaned over left a pinch mark in the saddle.
Pic is from after I replaced the "custom" tank that some one hammered "knee dents" into which you can see on the table.

I still have my first rode bike, it's on it's way to looking something like a Skunk:

I don't think anything quite sounds like those old big bore air cooled inline 4's.