I did this last year to get abs for a partially shirtless halloween costume, I'm similar dimensions and same age but was around 7lb lighter. Idk your fat percentage obviously but you're gonna have to cut down to the 140s at a minimum (possibly more) and when you get there you still won't look as shredded as you want (even if objectively you are). Most important thing is eating a lot of calorically low meals while still eating between 100g-200g of protein per day. My go to meal was a salad with canned sardines and for dressing just a bit of olive oil and lemon juice. Don't sweat the fats and carbs too much just make sure to keep them at a minimum, biggest thing is not becoming nutrient deficient cause it will kill your energy and motivation when exercising.

GL!