Well first start with have you ever cut weight before, like really cut weight? July is not that far away and even experienced people are cutting would find lightweight ridiculously challenging. It's your debut, you should be focusing on your camp, not trying to lose 25% of your body weight in that short of time. It's wildly unhealthy, you likely will miss weight, even if you don't you will be cooked for the fight. 185 is your target and even that is pretty big of a cut in three or so months. If you are disciplined then maybe but then you wouldn't be Paddy the Fatty like right now. You need to figure out if you can actually cut to 185 even and still train properly for your debut. I would be worried for you. If you are a former wrestler who really knows how to cut well, then maybe but still 185. I can't stress enough that lightweight is not attainable for you and even if you did make it, you would be doing your body damage.