Book Design - Cover and Content Formatting

Hi

My book has been proof-read and next step is design. I would love a beautiful interior design and cover design - along with any tips for book launch.

Here are my current plan and requirements
My plan is to sell it on my website only (for now, Amazon may come later but I am excluding for now) as (i) PDF and (ii) ideally the Kindle-friendly format.
As an eBook, my understanding is that margins can be even on each page
The book is about 250 pages and I have a cover pic I prefer
Book Title: Working title is 'A New Dawn in Ireland' - this is to be confirmed
Timeframe - no particular urgency but keen to get this done!
I would love to work with someone with great energy and ideally is keen on personal development and life design. Also preferrably Europe working hours if we need to collaborate.