Nice. If you can video the maiden. Unless you figure you'll be nervous enough without the vid going.
Don't sweat the flight. If you have experience on other CP helis then you'll be all good. My advice:
- Do a control direction and correction direction check before spinning up. WE do this a bunch of times on the bench, but being close to it sometimes you get the perspective screwed up. Step away, check tail direction and do your tilt and swing testing to make sure corrections in the swash and tail are correct. Step away for the tail checks just to get a good look and be able to verify it's going to be pushing and pulling air in the right directions for the stick input and gyro correction. I saved my Gob 700 (4th big heli build) doing this, had my gyro tail correction direction wrong.
- Do your spin up test from a distance. Listen for unexplained high pitch whines and whatnot. Don't leave it spun up too long. Although the Ikon is great at vibration resistance in it's control logic, don't tempt fate by leaving it spun up on the ground for longer than necessary. Spin it back down, to a quick check of screws (touch them make sure nothing is backing out). On the goblins, make sure to check the screws holding the servo mounting plates to the frame. Don't ask me how I know.
- Spin it up and then get it a couple feet off the ground quickly. You should be confident of the control directions and correction directions before this point, so do not be stingy with the throttle/collective and try to slowly lift it off or keep it a couple inches off the ground for any length of time thinking it will be safer or more prudent. This is where mistakes with new helis are made. You're not going to be used to the control feel or collective responsiveness. You want to get it up and into the air couple/few feet quickly so you can get used to the feel away from the ground. Only once you're confident with the controls should you be trying to keep it on the deck.
No need to stab the throttle/collective either, just a good smooth but firm application of throttle/collective once it is spun up.
I agree with Tony, even with beginner bank mode setup, I'd still add 20-30% expo. It will be very soft feeling, but better that than overly responsive compared to what you are expecting. You can always land it and back off the expo setting in the Tx. You can use D/R of 75%, but I do not believe it will be necessary. The cyclic roll rate for beginner mode is *very* tame. To the point that you want to make sure you're a good 75ft in the air if you attempt any stationary rolls/flips with it. It will be like a slug. Using 75% D/R will only make that effective roll rate even slower.
I'm a DUMB #@%! The other three tightened up nicely and are holding but i don't want to take any chances with the tail knowing there is one screw not quite holding.
I think I will give that a try, it might hurt a little! 
