The simplest and quickest way to get a tree into productivity is to remove every branch more than a third the diameter of the trunk (half with spurry, precocious varieties like Goldrush and Braeburn) and leave everything else until the tree comes into bearing. You need to choose a central leader and if it’s needed, as it appears it may be with your tree, keep it straight with a piece of conduit or some kind of post, even a thin, straight sapling from the woods.
Worry about the permanent scaffolds later.
Here’s a more detailed explanation. Pruning Guides