Building most pre-designed tracked rides here is next to impossible, so you will need to be careful from the start to not block yourself or spend too much time building any one tracked ride if you plan to reach your goal. To start out, set your research funding to maximum, direct your priorities to shops and stalls, and build a Swinging Ship and several shuttle coasters. After you research the Drink Stall, direct your research priorities to Thrill Rides, and build the Go Karts and Gravitron/Top Spin as soon as you have the chance. Once you have enough cash on hand, add more roller coasters to the park.
When building new roller coasters, keep their stations level with the tops of the cliffs whenever possible. Choose a mixture of cheap (e.g. Side-Friction, Steel Mini) and maneuverable (e.g. Wooden Twister, Corkscrew) coasters when developing your park. Once you have a decent amount of rides, consider adding a Chairlift to connect the sections of the canyon. So long as you continually expand the park without running out of money, you should find this scenario rather easy to complete.