I ended up using Permatex copper anti-seize instead of Locktite. The last thing you want is for water to get trapped inside those bolt holes and have the bolt fix itself inside the housing. That would suck ass. 30-35 lb-ft of torque is more than enough to keep those in even under extreme vibration. I'm also pretty sure there is locktite already on those bolts from factory.
I would avoid the Motorcraft 75w-85 hypoid gear oil, it's far more expensive than Amsoil or Mobil-1.
The mobil-1 is the cheapest:
https://www.walmart.com/ip/Mobil-1-...LS-75W-90-1-Quart/110167556?classType=REGULAR
Amsoil isn't terribly expensive but it's going to be more exclusive (Can only buy in some places), especially in Canada. If you already have an account and can get it reasonably, go for amsoil, otherwise save some money and get the Mobil-1.
You will need almost exactly 3 qts if you fill to the bottom fill hole. Doesn't hurt to have some extra too.