Need help upgrading and modifying a fiverrscript clone website

We've got a site already running on the fiverrscript clone. The site has been modified quite a bit already and we would like to keep those changes intact. We would also like some additional changes made - these changes are all pretty minor for now. Ideally you work out and we'll use you for our bigger changes coming in the near future. With all of the changes made to the script in the first place, we need to upgrade to the latest version of fiverrscript - this hasn't been done in about a year so keeping the hand-coded modifications intact will be a priority. We will need to be in constant communication throughout the entire process. You'll need to know what existing features to keep and we'll have to communicate when the newest version is installed to figure out if we need to keep the modifications or if the out-of-box script will do the trick. I wouldn't say this is a massive project - the biggest thing is upgrading to the latest version and at the same time, keeping the modifications we want intact. The minor changes after that happens are just that, minor - things like installing a blog to /blog, adding an opt-in box when new members are signing up for an account, placing promotion image(s) onto the site, etc. I'm listing this as a one-time project. We will want to work with you again if it all works out well. I know there aren't a ton of specifics regarding how long this job will take. If I were you, I would check out the fiverrscript clone website and see what that looks like and how complicated it is and that should give you a good idea of how long this job should take you. If you have any experience with fiverr-type websites or specifically, modifying the fiverrscript clone or other clones, please let me know in a PM. Also, if you think the $750 max price range on this project is low, bid it out where you would need to be - that's all up to you... Also, if you have any other examples of like work or just work you've done in the past that may sway me to choose you, please list them. Thanks for your time and looking forward to working with one of you!