Jordan, I just looked at your showcase thread, then found your introduction. Sorry I haven't read sooner and sorry to hear about your parents.
So lets talk pond forum help. Showcase thread is great as it's a way you can follow your project and others can see what's going on without all the clutter. I recommend everyone start one. But I would also recommend posting pics where members can post to you as well. This thread is fine just need to get your help where your pictures are so everyone can follow along. Check in daily and keep up with what you have going on to what is being talked about in the thread. The more information you give the more others can help give ideas or helping advise. remember, It's the Internet, everything that is told to you must be true on the internet? LOL seriously, NOT! You have to make the final discussion as what to do and what not to do. The more you learn the more you understand why it's important to move slow and with a plan. But very seldom is someone here going to straight out turn you in the wrong direction, Same things just work better in some ponds than others.
Right off I must say, the bog that was removed can still be used, don't throw it away. You may very well want to use it later on. Get us some more general information, how long how wide how deep is your pond. Lets get the correct volume of water. next do you test your water? , if so what are those readings. If Not, I highly suggest looking into getting a test kit and learning the basics of keeping water. this is probably the most important thing you can learn when it comes to keeping Koi, or fish in a outdoor pond. Next we need to make sure that the water is ok for the fish, green is not bad, but bad water can be clear. So finding out the shape of the water and the condition of the fish should be first step. second is getting as much out of your filter you have now. you don't want to remove anything that is filtering right now as it is holding it's own. removing them before having something better in place can cause water problems. Water changes can help water that is not in the best of shape, but next thing you need to know is what is the source water and how does it compare the the pond. They will be some difference. Do you know how many fish are in the pond? There is a LOT of potential in your pond makeover. Some thought was put into it during building and it could be made something really nice without huge costs. I can't help but ask so many questions. So much I would need to know before starting a project like that myself. But I think I could have a lot of fun with that one! Good luck! this should be a fun journey for you!