Add wordpress user integration and change functionality of existing Meme Generator script

Hi there, I currently have a Meme generator script purchased from Code Canyon. [login to view URL] My website is [login to view URL] I would like someone to implement the following features / changes. 1. Currently the script has its own user registration and login system stored in a database. I would like to make it so the script uses my Wordpress user database instead. All the functionality would remain from the old login system, just people would register on the Wordpress section of my website and be included in the Wordpress database as well. 2. I would like to add keyboard shortcuts to the homepage ([login to view URL]) so that users can easily press a keyboard button to browse up and down the website to view memes. Same concept as [login to view URL] 3. When you press the link to create a meme ([login to view URL]) I would like instead the process to be a two page process. On the first page it would be a thumbnail list of all possible meme images, like this [login to view URL] The second page would look like [login to view URL], except it would retain some of the editing options found currently on the website ([login to view URL]). You would still be able to move/drag images around and add additional images that you can resize. I want to simplify the adding text options though. If you are confident that you can do these three changes, please contact me. If you perform well, I would be open to discussing further modifications with you in the future. Thank you.