Great that you're going into sheep. The very best of luck to you, hope you enjoy it.
Don't discount commercial breeds. There's no such thing as "farmers' sheep" and "hobby" sheep. A lot of the fashionable rare breeds are actually much wilder than the boring ones and there's no shame in making a profit from your hobby.
The easiest beginners' breed is the same one as most of your neighbours keep. That way you'll be on the same annual routine as them & they'll keep you right, & you can share with them to reduce costs. You can always branch out into something unusual once you're more confident.
You're not really going to need a dog for your number of sheep - just bucket train them feed them now & then in the handling pens & make a funnel shaped entrance. Have someone walking behind with a dog on a lead in case the couple at the back get cheeky. That said, a trained dog is a joy to own, so do it if you want to, not because you have to.
Thanks for the support and information, it is appreciated. I want to get my dog/s trained to some level - as one is showing herding instincts anyway, but that may just be it taking the pi**, but they need something to stimulate them further