If you are going to use the stock supplied battery hatch, make sure your battery packs will fit through it before attaching it to the plane....

Trial fit your battery packs into the battery bay before gluing the two halves of the fuse together. Easier to carve out the foam before the halves are glued.

I put packing tape on the leading edge of the wing just where the rubber bands touch to save the foam from being scored.

I also ran some packing tape on the bottom of the fuse from aft cabin to the front of the fins. This will help protect the tail from breaking when hitting the ground belly down.

Some have problems with their landing gear coming out. After inserting the metal gear into the plastic part, I glued a piece of wood in there to hold it. When it was dry, I drilled one or two small holes sideways (1/8 inch, maybe) through the plastic part perpendicular to the wooden piece I glued in earlier. I drilled a few smaller holes in the other 'fins' too. Poke some small holes around the edges of the hole (deep in the hole, not near the top) where the landing gear goes. Use a lot of epoxy, working the epoxy into all the holes you've created first, then dump a bunch in the hole. You should have to wipe away excess epoxy as it oozes out as you install your gear. Ensure the gear is securely held down as the glue hardens. I've 60 hours on my original Estarter and my landing gear is in there solid.

You will get some slop as the torque rods compress the foam in the ailerons. I enlarged the hole and glued small fuel tubing in there (used GWS glue). After the glue dries, it is easy to cut flush with the aileron surface. Take your time drilling out the hole using progressively larger bits spun with your fingers. The center hole of the tubing I have is the same ID as the OD of the torque rods. Take care to keep the hole centered where you want it, marking a light line on the aileron if necessary.

Stock hinges work fine. Poke 9 small holes in each side so the glue has something to bite through.

Hope that helps a bit.