Which is a better Route for Seniors Qiaotou - Tina or Reverse ?

We r husband & wife ;65 &60 years old , will be at TLG on 16th July coming from Dali ( earliest bus) & plan to trek upper path & stay at 1/2 way or Tea Horse for the 1st nite & con't the next day.Also wish to trek down to see the lower Gorge from Tina & if Time permits to go to Bai Shu Tai Terrace Waterfall & back to Dali (3 Days ).Which is a better Option for Us...Qiaotou to Tina or the Reverse Trek from Tina...? We r quite Fit .Were at Huangshan Mtns last year ( 2 days ) trek East & North Sea & Western side till 4pm ( 65% journey )as need to take last cable car at 4.30pm . Kindly advise as we need to book The Guest Hse for our Trip ?Thanks