Hi Edwin ! Reached thallaserry last night and thanks a ton for the route. The roads are very good and scenic.
I took the following route :
Mysore - by pass road that shows calicut board to escape city traffic - followed road to HD kote - bavali -mantadvadi - kootparamba - thallaserry :)
Complete route from Hyderabad to thallaserry is great except for a 13km stretch between HD kote and bavali. It took me a good hour off roading my getz to cover 13km.
Took some good photos in the forest reserve and came across a wild elephant. Will put pics up after I get back
Thanks again !