You're a big guy, I reckon 1800 is not enough and you'll end up sick, bingey or disappointed.
You need to be eating enough to support your training but with a reasonable deficit to support sustainable weight loss.
Listing all your food intake is a good idea but I would rather see what you're eating now, rather than your target calories, at least for a couple of weeks then make an informed decision where to be with a diet target.
(with the help of random internet nobodies and some smart people, the future will decide what category I belong to but there are always more of the former than the latter, lol)
Think about how many years it took to get to your current shape and remember its a marathon, not a sprint to get to where you want to be, id rather see you use the 90 days to get your training in order instead of crash dieting.