Very nice! I think you'll be close to the 550's max takeoff weight by the time you add a brushless gimbal and any FPV stuff.. I am and its struggling to fly as nicely now so I've upgraded to the Aerial Media Pros 650 heavy lift conversion.
I really like 3s with 10inch graupners, a great combo I think..
Been using the YUN1 on mine but I've been hankering after the aeroxcraft brushless gimbal, its slightly inferior to the yun in terms of the martinez board arguably isnt as good as the alexmos (but you could use an alexmos if you wanted to) and the general design isnt quite as smooth, its hard to setup too, but it does sit so nicely on the xcraft frame!
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