Looks good, I know you were stressing out there for awhile trying to find a plow and figure out how to mount it, but in the end it all came together nicely, and just in time for the snow!
Those lines coming off the angle cylinders do look a little vulnerable, if your plow rides up high on a bank they could come in contact with some chunky junk.
Stacking stops were recommended to me for my frame mounted plow, to prevent the plow from rising to high on a bank and possibly hitting the cylinder. On mine it was needed, on yours it looks like it could raise up pretty high before it hit anything, so maybe not necessary.
The snow foil, I don't know if that's gonna make a difference on a slow moving tractor unless you get real deep powder snow falls, I've plowed for many years with trucks and rarely did I wish I had one.
I haven't got a chance to use my new plow yet so if I find I need to stop snow from coming over the top of the blade, I do have some thick rubber that I could install just like on yours.
About float, IMO you need that all the time, either by having enough slack in the chain or thru your valve. What you can do is drive around the areas you'll be plowing and drop the blade in any holes, ramps, aprons, etc to check if you have enough slack in your chain. I have a driveway apron that comes up from the street levels over a sidewalk and continues up the drive, I need a good 8 inches of float thru there to keep the plow on the ground.
Whoa, that was long winded, I gotta stop drinking coffee at night!
Good luck,
Beautiful!! 
