Replying to Honda XR80 Faster and Street Legal Mods

My second bike, first bike with a clutch, is now sitting in the corner of our shop, collecting dust. I was thinking we could sell it, but I love this thing too much to sell.
So I was thinking about moding it, getting it plated, and having a sweet little mini bike I could use to run to the store, blast around on in town and when I start school next year commute and save big on insurance, gas, ect.

But, the thing is a little underpowered currently.
As far as mods go, it already has a FMF power core 2(Im pretty sure) pipe on it, and the air box is all dremeled out.

The only things I can really think of are through on a bigger front sprokett and some super moto tires, and eventually bars that werent ment to fit a child, or that would be more comfortable to use croutched down like on a cafe racer but that might be weird.

Anyone think of anything else that wont break the bank? Anyone know anything about big bore kits? Or deletes that free up power?

I've got all winter till the roads arent covered in snow water and ice to save money, but I'm not looking to spend that much, and I dont know how helpful NS will be but thought Id ask