Basic Chrome Extension to Modify Existing Site

Hello! I'm looking for someone who can create a basic chrome extension that takes information from a simulation basketball game website and adds a toggle button that does some simple calculations and changes content on the front end. This is a cosmetic change of the website. The requested changes are below: 1. A standard player profile looks like this. (Screenshot 1) 2. Add a toggle button and settings button in the navigation section on page load. (Screenshot 2) 3. When someone hits the toggle button, the player ratings should adjust according to simple math (addition). The amount added to the number would be based on the class already on the website. If a rating has "potential-low" class then the number needs to increase by 4. Similarly, the matching calc number needs to also increase by 4 so that the bar increases. Finally, the class "potential-low" would then change to "potential-verylow" which is a defined class on the site. (See code of actual site. Screenshot 3). The five classes to determine the default math/ratings are as follows: potential-verylow - No change in number potential-low - Add 4 to the number potential-moderate - Add 10 to the number potential-high - add 20 to the number potential-veryhigh - add 30 to the number 4. This would happen with all ratings except for "work ethic" which won't change. The final result after toggle would look like Screenshot 4. 5. Ratings can't go past 100, so it would have to cap at 100 if any of the math went beyond that. OPTIONAL: 1. It would be great if the total rating number would increase by the amount added for all ratings fields. Screenshot 5. 2. It would also be nice if there could be a settings page where you could change the default values to be added at each potential level. Screenshot 6. Let me know if you have any questions.