Okey Dokey. In your shoes.
I'd search craiglist. I'd be willing to travel far to get what I need.
Like the Wizard of OZ. I can only suggest what I think you need. Not what you want. I traveled 250 miles round trip to aquire the above basket case I am posting about. You living Florida. Have access to a pethora of stuff you are gonna need.
Nice thing about the above link. You have a son who can help out on this on assembly. I know my 2 boys. When they get excited about a project. They start working on it like it is going to be their gear.
As far as training wheels goes. This is how I am going to set up my wifes sportster. I already have the sidecar and mounting hardware in the back of Cushman Truckster pickup.
This is my general idea on how my wifes motorcycle is going to turn out . That project is for next winter. My wife quit riding after her cancer operation. The big scar on her belly makes it uncomfy for her to try and hold a motorcycle upright. But I can fix that.
Right now. I am busy with this
Good luck with your honda 750 project. But can I make a suggestion?
The above is Belt final drive. No lubing needed. Easy to change the belt in your garage with hand tools. Fast enough. Decent brakes. 1 650cc cylinder for easy maintenance. Single Carburetor. Not fuel injected Already put together, Light weight to hold up. Even a big man looks good on it.
I went the 650 I posted originally about because I had one in the USMC back in the day. I already know about what that bike can do and how to maintain it.
I've synced 4 carbs before and worked on multi-cylinder jap bikes. I would not recommend a multi cylinder unit to a virgin mechanic, But that is just me talking here.
I own 2 650 single cylinder bikes. I can kill myself on em with the power they produce.
If Harley is your bag. I looked at the odometer in the picture on this one. It only has 6,000 miles or so on it
I used to roll on old motoguzzi also when I was in the Marine Corp. Just like this one. I learned they used vw bettle valves, pistons, and rings. Plus other beetle parts.