BIG GRANT

HI all, i am currently half way into my first attempt at cutting its going quite well at the mo i have lost around 12 pounds now it was more but i have put a little bk on, what im after is a little help with after the diet, at the mo my cabs are lowday 100g
med day200g
high and relode 500g
protein stays at around 300g all the time and i up the fats alittle on low days, now when i finish in about 8 weeks i want to maintain my condition for a few weeks through the summer b4 i switch to 3 day a week traing and a clean bulk.but i have no idea what my carb or fat intake should be to maintain for the few weeks through the summer,or what sort of weight i should be aiming for on my clean bulk as i dnt want my bf% to go to high.can anyone help ?? thanx Grant