I will admit that I haven't done a BAK mod yet. I purchased Churchkey's kit last year and have plans to do it soon. There will definitely be a little investigation and ingenuity needed to execute this but it's not enough to consider selling your bike over. And of course, there is a wealth of knowledge on this site with many knowledgeable guys here that can guide you on any challenges you come across.
I'd start with just working up a basic list of parts and seeing what you can get. Start piecing the kit together over the next few months and then one weekend, knock it out.
I'm hoping to do my VBAK install in the next month or two, during which time I'll be taking photos and shooting video to help improve on the information that's already on here. Hopefully during that process, I can help do an investigation on anything you may have questions on for when you do yours.
Just some thoughts to encourage you to stay on your Warrior. It may not be worth it to you but everyone I've ever talked to, unless they were radically changing riding styles, always wants to go back to their Warrior after they let it go. I know a day will come when getting parts will be next to impossible and it'll be unavoidable that bikes will be laid to rest, but it's too soon to talk that way now.