I'm in the middle of building this one with a second in the on-deck circle. So far the only real problem I've encountered is with the instructions - do yourself a favor, decide what variant you're making and go through them
CAREFULLY to line/blot out anything to do with the variant you're not doing... when you get to the bumper step you'll see why

. All in all it's a great kit, even with all the PE (I strongly dislike PE) and the issues with the directions!