Matt,
If all is well with the front end I would think twice about removing the leaf springs. The attachment is also a critical part of the geometry, it is really tough to get it all back properly without expert and experienced help. As for the hook for the hood spring, I use an "S" hook I picked up from Home Depot. It has a plastic coating, works great, won't scratch anything. And yes, you are correct, the injectors are either good or bad, although some argue that they can be cleaned if for some reason they are fouled with old/gummy fuel.
Let us know how the rebuild turns out, sounds like fun.
Best,
g
'64 230sl, fully sorted out...ooops, spoke too soon