This is for Line Of Sight? Except for basic testing (and only at a good distance), I wouldn‘t LOS something like this. Too big, too dangerous. Seriously. LOS on an R/C plane makes sense, but LOS on a quad is boring at best, and in this case being that close to something that big and unstable seems risky, IMHO.i just want a big quadcopter for my kid to watch fly around since the small ones are hard to see
Give him a real thrill. Build him a safe, smaller quad, put FPV on it and hand him ride-along goggles.