Have you noticed, the OP has not been back. After reading this thread, I'm not surprised. I'm confused and I'm used to riding the trains in the UK.
So, hikemike.....here's the deal. Passes can be complicated and confusing. Discounts here, discounts there, rules here, rules there.
Let's make it simple. A general rail pass can cost more than easy point to point tickets. (Regardless of what Rick says. He hasn't changed his suggestions since the days he was the number one seller of rail passes in the US. And that was last century. Any costs mentioned in a guidebook are also outdated.)
Peruse over the the Man in Seat 61 and get a general idea of rail passes and discounts.
Then, go to the National Rail website and plug in your trips to get an idea of cost on point to point tickets. They also have a section about all the discount railcards available.
Don't forget to also check the bus sites like National Express, Flixbus and Megabus. Trainline.info will also give you a general idea of bus services available in the areas you are visiting although it is far from perfect. Also keep in mind that the 2 GBP fare cap on bus tickets on some routes has been extended through the end of 2024.
Then you can compare which combination of passes, discount railcards, or simple point to point tickets--rail or bus-- would work best. (Keeping in miind that some options are only available outside the UK. So our friends in the UK may not know about them.)
As for delays, cancellations, strikes, weather, war, pestilence, or locusts.....well.....you can't plan for any of these way in advance. Nor worry about them. Plan as if everything is going to go as you want and deal with any issues that may come up. (But sometimes you might want to have a Plan B.)
To answer your question, my only suggestion is it's time to do a little homework. Happy planning.