The only fuse you need is for the lights. The OEM switch has the fuse mounted on top of it. 20a afaik.
Do not wire the lights through the ignition switch! Make sure the light wire has a quick disconnect in it for removing the hood.
BTW, you'll find it a lot easier to do if you just buy a ready made harness.
Replace the terminal block & the ignition switch & it will be totally rewired.
No need to remove the hood, but removing the tool box & air filter makes it an easy job.