Oct one day trip in Shenzhen

Hi,
I wld be cmng to she zen from h.k just for a day to do windows of the world.but my friends told us to visit OCT also.so now I have to extend my overnite stay in she zen.originally I was just cmng from h.k in the morning for windows of the world and going back to h.k in the evng.so now if I want to visit OCT how shod I plan my one mor day e trip to OCT ,and do recommend a good hotel near OCT,so once we finish windows of the world and then check in a hotel and next morning do a day trip of OCT and back to h.k.