Visa assistance

Hey..I have booked my flights for hongkong from india from 24th October to 9th November dat would b 17 daes..but with the pre arrival registration indians are allowed to stay for 14 days in hongkong...so should I apply for visa for 17 days or I can jus go to Macau for few daes and then wen I enter again in hongkong I will have 14 daes again...pls reply... thanks