Hello Daniel (@doublejack). Welcome to the forum!
I’m sorry to hear that your plans are not working out as expected so far. We will find something fitting for you, for sure.
Please read through this thread to get an idea of some of the solutions for a duathlon plan that other user already came up with, me included. In the second post I explain my use of the triathlon plan for a very similar scenario. Maybe this is even the topic you were talking about.
It’s very important to consider strength training and your flexibility on your way to a well rounded athlete. The training plans give you an awesome variety in this regard (strength and yoga).
An even better option would be to go with a custom plan from one of the talented SUF coaches.
Just squeezing in your running between the All Road Plan doesn’t sound like a good option. Without enough rest and with too high a training load you risk injury and won’t see the progress you desire. It’s just my personal opinion. Maybe one of the coaches here will chime in.
Another option you could consider is looking at the “All In” Plans, even though they are a bit shorter and won’t offer you a progression over a long period of time.
Please tell us what you will decide.