Looking for suggestions and feedback for new site development

Site URL: https://www.marzarellafitness.com

I'm torn between refreshing my 7.0 website, or just trashing my entire website and starting over with 7.1. I have been working on a new 7.1 site. Lot's of great new features to play with and make the new site even better. 
Today I found out that the blog posts are unable to migrate to 7.1. I would need to add every one of my blog posts one by one. This is TOTAL BS. 

So, if I stay with 7.0 and refresh my website, I could use some suggestions to make my site better. I just repainted my new gym. I will be making the colors of the gym the theme colors of my website. The primary is a gold hue, charcoal and white. 

Any thoughts on how to implement anything or how to proceed?

Thanks in advance.

I suggest you look at the 7.0 Brine Family, there are a lot of named designs in that family. You can change templates and your blog content will copy over, your existing site will not be affected and will work as normal. You will have to tweak the new one, some funny looking things can happen with a dramatic template change, or you keep your new Brine blog, delete the other pages and create new ones from scratch.  You have a number of ways to go about it. 7.1 was and is a Brine Family inspired look so if you want your site to look like new could work out for you. 

https://support.squarespace.com/hc/en-us/articles/205815598-Switching-templates

Thanks for the help Derrick. Much appreciated.