Absolutely! Your plan includes a diverse mix of hill stations, cultural landmarks, and bustling city life which sounds fantastic. Here are some important tips for your adventure:

Best Time to Visit:
Generally, October to March are the most pleasant months to explore these areas. Ooty and Kodaikanal, being hill stations, provide a refreshing climate during summer months from April to June too.

Route and Accessibility:
Starting from Coimbatore, you can head towards Ooty which is about 84 km away. From Ooty, Kodaikanal is approximately 252 km away. Finally, from Kodaikanal to Bangalore Urban is about 464 km.

Altitude and Acclimatization:
While Coimbatore and Bangalore are at lower altitudes, Ooty and Kodaikanal are hill stations at slightly higher altitudes. To prevent altitude sickness when going to Ooty or Kodaikanal, give yourself some time to acclimatize, especially if you're coming from sea level.

Accommodation and Booking:
Book your accommodations in advance, especially during peak seasons and weekends. Bangalore and Coimbatore have a wide variety of hotels, while Ooty and Kodaikanal offer plenty of homestays, cottages, and resorts as well.

Clothing and Essentials:
Light casual clothing for Coimbatore and Bangalore should be suitable. However, carry warm clothing for Ooty and Kodaikanal, as the temperatures drop significantly in the night. Don't forget to pack sunscreen, comfortable walking shoes and a hat/cap.

Health and Safety:
Stay hydrated, carry personal medication if necessary. Observe traffic rules while driving in cities. In the hill stations, it's safer not to wander off on lonely trails especially after dark.

Local Etiquette and Respect:
While all these areas are quite tourist-friendly, maintain respect for local customs and traditions, particularly when visiting religious places. In crowded places like Bangalore, beware of pickpockets.