As already suggested, go for it ... but with a few caveats.
1. Prepare physically. Being able to do 80 miles in a day doesn't mean one can do 50-60 miles per day repeatedly. You don't need to be in super shape as you'll get stronger on tour, but build up miles for 2-3 months prior.
2. Get a tent that will keep you dry and withstand wind ... and a sleeping bag/quilt for the coldest possible nights. Cold and/or wet is a quick way to ruin a tour.
3. Ride loaded and camp with your equipment prior to the tour. A couple fully loaded over night trips will do. Also, make sure you can pitch your tent in the dark because at some point you will need to.
4. Embrace everything ... the good, the bad, the easy, the difficult, the scary, etc. It will all be part of your story in the end. Your speed of discovery comment is spot on.