Hi,
If you have 25 years of experience cross stitching, there is no question you have the experience to do a Mystc Stitch pattern. Yes, all the patterns I've bought from Mystic Stitch have multiple pages. Their patterns are detailed like you would see with ARTECY patterns or Heaven and Earth patterns. These are NOT kits. Because of their detail, I would have some small projects to work on when you feel the need to walk away from the bigger, more detailed projects. I have NOT done the project you speak of but.....
I would give it a try......