Just read your last post.

DO NOT DO IT.

I am not normally one for jumping on someone but you need to learn a little more. These models are not toys. Assembly of the ARFs is pretty straight forward but running the engines and flying them takes skill and discipline.

These models are not to be flown 'in your local park' and fitting a camera is way too advanced until you have been doing this a fair while.

If you are seriously interested you will get no end of help.

DO NOT BUY ANYTHING OR ATTEMPT TO FLY ANYTHING until you have done a bit more research and know what you are talking about. People have been killed by these models. You have been warned!