Great to see you again! Your plan's fine. It sounds like you've got an all-rope jib halyard (which is best), so there's no need for a pigtail. Wire-to-rope halyards were needed to prevent rope stretching but with today's low-stretch ropes, there's no need for the meat hooks and general difficulty of dealing with wire rope running rigging. Make sure to tie your tools with stout, thin line to your harness so you don't drop them and bring an extra, strong line, to tie yourself of at the mast head as a safety. Also, using a bosun's chair with a rigid bottom will save you a ton of pain, because climbing harnesses are not designed to carry loads for long periods of time - You'll probably be aloft an hour or more. I also use etriers for my feet and clip them to the masthead. They allow me to climb much higher and work at a comfortable chest-level. You're quite right in using a new halyard - I have several times refused to go aloft, based on rotten halyards. One last thing - Tie the boat very securely to prevent swaying!
Enjoy the view up there!
I'm a shipwright, rigger and professional sailor, in business as My Boat Works, in Los Angeles. I also make super quality, High-Definition instructional boating movies! I'm here to give my expertise to boaters, as I was helped. It's my pleasure to help you enjoy activities I love so. Cheers! - Jerr