The stock carbs will more than support the work. They will do 65hp all day long. If you have 28mm carbs lying around then use them but I personally wouldn’t spend the money on them new if I had good stock carbs.
Jet the stock carbs 330 main, stock needle mid clip, 25 pilots will work most of the time with a half turn out on the air screw, if not use 27.5 at 1 1/2 out on the air screw. This will get you in the game. Fine tune it to your liking from that point.
If you are running 370 mains on the stock carbs with my port work you are pig rich or have an air leak.