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That's way to cool GREAT idea

northchim
correct on the servo exts. only a couple of bucks
Your set up is almost the exact one in mine. I have run tower hobbies ESC for years and never had a problem ...until I used a 4 cell-DON"T and 2-over amped it showing off--there I said it.
I would suggest you start with a APC 5.5x4.5 -- make sure you balance any prop you put on the plane. The max prop would be 6x5.5 APC as you will be close to exceeding ESC amp limit
watch the FJ in action see the link in the above post

I now use the new eflite 620 amp ESC in the FJ and it's a great price. Castle is THE best but it may be out of you price range as it is for me.