Tiger Leaping Gorge: How to get there, cost & itinerary

Hi..I plan to hike TLG in this April. May I know how I can get there the easiest way since I will be from Lijiang town. I plan to hike all routes, can I do that in 3- 4 days? Which one will be first, second and third and what will be the overall cost, if u can help..it would be appreciated..Thanks!