Improve web site based on Wix

I own a small business, my web site is presently own with Wix
There are some subject that i would like to improve with our web site:
- Change some text, i will provide the text
- Improve the web fonts
- Modify the design for some pages
- Add some partner logo
- a little competency transfer to be able to add ourself some event or ads
- improve seo

it's not a big job, but maybe after that, i also would like to create a linkedin banner, redesign logo,.. for a next step