I did my PPL with Tayside Aviation and would highly recommend them.
As you say - good facilities and a nice bunch of people.
Dundee airport is also a good environment for learning to fly with full ATC, enough traffic and a good mix of weather to challenge you.
I was working fulltime throughout my PPL, but still managed to average about 2 hours a week which was fine for consistency of learning.
I did buy a PPL starter pack and got good use out of all the equipment. Your instructor would keep you right on the essentials though.
There's also an active flying club based at Tayside - so well worth getting involved with that, if you do become a student. Learning from other experienced pilots and meeting likeminded people is a great way to enhance your flying experience.
If you have any questions feel free to ask or drop me a PM!
Mark