about how many red chinchompas would it take from about 80 range to get 99?

 

 

 

and about how long will it take using shaking tunnel?

about 40m worth of chinchompas, about 300k xp an hour-too lazy to calculate myself

Add another 8M on for prayer pots too!

 

 

 

All up you will need 65k chins (give or take 10k), and around 900 prayer pots, and the ability to keep a careful watch on your prayer level for 35-40 hours.

I had thought that method was under 40k red chinchompas.. I also think you get about 250k exp per hour with range in the high 90s. The whole feat is supposed to take about 50 hours of ranging. Good luck if you decide to attempt it. :)