Hi, how's it going?
I've done the bearings without any special tools, need a bit of knowledge and some imagination.
As for getting the axle back in, just make sure its clean, use and old toothbrush to clean it and put some oil on it before replacing. If it wont go easy use a piece of wood or something soft on the outside edge of th cv joint and tap with a hammer, after that use the hub nut to pull it through. The alighnment should'nt matter, but when you're taking parts out it is good advice to make alignment marks for refiting.