Everyone has decent-to-good advice, and the information is all seeming sound, but I think you guys are getting in too deep and complicated for Zircon's use case. He's about to ding level 10 and select his character spec while you bros are out doing level 90 raids.
Andy, i'll bullet point the steps you need to take:
"Zircon, those changes are all well and good, but at the end of the day it comes down to simply calories in versus calories out." -Professor Krug
"Lifting is going to burn the carbs you have available, and then the cardio can start to work on the fat stores. If you just do cardio, all you're doing for the first 20-30 minutes is burning carbs that you just ate. If you're not lifting weights, I recommend starting." - Joe "is there anything he can't do?" Zieja
You have a lot of people here who can and will help you 'powerlevel', but you'll have to do some work too. Nothing you can't handle though, i'm sure.
Body re-composition isn't as complex as people make it out to be, unless you are near the top of your physical performance and are trying to min/max out that final few percentage points (like some of the guys here). Basically, it sounds like you are eating high quality foods, probably just too much of them. The calculator *here* will let you know how many calories you should be taking in, and then you will have to do a little bit of research on the calorie values of your most commonly eaten foods.
You actually have all the tools to do really well here; being a competitive gamer/producer who has undoubtedly looked up countless strats/builds/buy sequences for games, you just need to use them for real life.