G'day

You can do it any way you want. But .... I usually build the basic bits, then cover them then assemble them. In effect, I build an ARF then assemble it as I would an ARF.

So long as you are happy to cover the tail feathers in place then there is no reason you should not. It is generally easier, though to cover the parts before assembly particularly the hinged bits. I would not hinge the elevator, ailerons and rudder and then try to fit covering round the hinges. I think it is easier to cover the moving parts before fitting the hinges. I also fit the horns before hinging too. It is easier to drill the mounting holes with the part flat on a bench.

Se for trimming some covering off to glue things in place, If you use a really sharp knife then it is fairly easy to just cut the covering without cutting the wood. Use a finger to stop the knife digging in. Also, you can cut covering like this by using a soldering iron with a fine point and a steel ruler. It will melt the covering but not damage the wood. Good for opening up holes in the covering too as it seals the edge as you go.

Have fun. What ever you choose will probably work. Just take your time and think it out before you act.

Cheers

Mike in Oz