I built my Tiger after being away from modelling for 20 years. When you first see all the parts, it's very intimidating. There has to be a zillion of them.
But by following the instructions, it's pretty straightforward. Read them twice before you proceed with a specific step to make sure you understand.
The electronics are plug and play but I did have to reverse one connection. The instructions were wrong. But that was 5 years ago so they probably corrected that by now.
As far as painting it, you will have to do that as you go along as you won't be able to paint it once it's fully assembled.
You can't go wrong with Futaba.
Hope that helps.