RE: Payload on 3D-planes
Sheesh guys, is it so hard to see what he needs. Personally I think the both of you need to chill out and think a bit
First of all the total weight of the plane when relating it to wingspan will be around 12lb to 17lbs. Minimum cost for the lighter side is gonna be close to $1200.00 and then towards the heavy side more like $2000.00
3D flight is not something you want to start out with and hovering is not all there is to 3D flight. Hovering is easy, dragging the plane around tail low and in total control is gonna be hard.
There is a way to estimate what your total weight is going to be but you need to know what goes into the plane first. Every manufacturer will list what the required and you can take that list, do the research on what each part weighs, add it all up, add 8 to 12 ounces for glue/extensions things like that.
It will not be easy to find out this yourself but it can be done. We do it all the time