Hi,
Hope you're having a wonderful day and this message reaches you well!
I've read through your project description and your attached pdf, and I can certainly revamp your current website to be much more modern, encompass your new design ideas, and include the updates to the info and pricing.
From what I read on the PDF and your website, it sounds like your a very nice salon that is well loved by your clients (since you're growing), so I definitely think the idea to go for a new more modern website design is a good one, since the current appearance is a little out-dated compared to most salon websites now. And one of the most cost-effective ways to gain new customers (especially for your new salon) is through a clean, easy to use website.
So, to revamp your website, I would use a cleaner, more modern theme (I noticed you use WordPress - that's perfect since that's my speciality.) that would allow the site to be properly mobile-responsive (with a cleaner mobile user experience compared to the current) and allow for the job to be done properly with a fast turn around.
Let me know if you have any questions or concerns.
I look forward to working with you!
Cheers,
Jacob