A breaker bar, a good penetrating fluid and a little muscle are a suitable substitute for an impact wrench.
A prybar in the cooling vanes of the rotor resting against the caliper bracket will keep the rotor still so you can crack the hub nut.
A home made scraper will get the crud out of the axle tube. I used a piece of scrap sheet metal and clipped it in the shape of half of the axle tube then smoothed it out with a grinder. Then I used a couple screws to secure it to the end of a scrap board.
A junk socket or a dowel the same size as the u-joint caps along with a hammer is a good way to get the u-joints moving out of the yokes. If you mess up like I did and knock it too far out of the yoke (instead of halfway like you're supposed to) then an angle grinder and a dremel will make it easy to get the u-joint out.
Hit the sealing surface on the end of the axle shafts with some 400-1000 grit sandpaper to make sure they're clean and smooth before re-installing them.
And don't forget the anti-seize when you put it all back together.