Well Pahujaamit i had been there 3 years back and i will give you the complete plot.
For K.Gudi Forest Resort i think you have to book a room in M.G road, you may get all the info in this link: [Jungle Lodges and Resorts Ltd]-[Wildlife and Adventure Ecotourism Destination]
I think they may charge 1000/head as its off-season now.Well its better if not best.
Keep an important point: There will be frequent power cuts there(We were told to bring emergency lamps).
Considering the rains,it will be a good time to enjoy nature with rain,But be aware of the LEECHES! They are a real hell and a spoilsport in this place especially.
Make sure that your car's Tyre pressure is good enough because the roads will be bad from Chamarajanagar or Yelandur(something with that place).
If you take Kanakapura Road you have to leave early from your home.As the road is narrow and shorter in width.
The routes from Kanakapura-Malavalli-Kollegala-Yelandur-K,gudi(not sure about it as i have not went through this route)
From Mysore road-Maddur take a left at the signal Malavalli-Kollegala-Yelandur-K-gudi.
If you need a straight road without confusions:
After K-gudi there is B.R Hills where the accommodation is good i will upload some pics of the rented home we stayed there.There is also a Veg hotel in B.R Hills BTW
which car are you going?