Shan-e-Bhopal - तेरी खूबसूरती से नजर नही हटती, नजारे हम क्या देखें - ललितपुरी रेलफैन

My dear brothers and friends I am planning to visit South India for the first time with my family and cousins so i need yours help regarding this trip.
We will start from Our Home Town KANPUR CENTRAL(CNB) with description as below:-
1 23/04 -CNB to JHS by 12104 LJN-PUNE EXP
2 23/04 - JHS-TPTY ...
more...

by 12626 KERALA EXP
3 26/04 TPTY-MAS 16204 TPTY-MAS EP
4 26/04 MAS -RMM 16104 RAMESWARAM EXP
5 28/04 RMM-MDU 56722 RMM-MDU PASS
6 28/04 MDU-CAPE 12633 KANYAKUMARI EXP
7 30/04 CAPE-TVC 16382 CAPE MUMBAI EXP
8. 30/04 TVC-MUNNAR BY BUS OF KSRTC.
9 .03/05 MUNNAR TO ERNAKULAM BY BUS
10 04/05 ERS-JHS 12625 KERALA EXP
Places of interest:-
1.TIRUPATI- Tirupati balaji
2.CHENNAI - Marine beach and Chennai market
3.RAMESWARAM -Rameswaram Jyotirlinga and Dhanushkodi
4.MADURAI- Meenakshi temple
5.KANNIYAKUMARI-Swami Vivekananda Rock Fort.
6.TRIVANDRUM- Padmanabh swamy Temple
7. MUNNAR- Local hill areas and sightseeing.
8.ERNAKULAM- Kochi harbour and Light house beach
QUESTIONS To all friends??
Q.1 -Does this trip will come under" CIRCULAR TRAIN JOURNEY" if yes then pls let me know whether can we book in any class on any route likewise we all will travel in SL but only in ERSto JHS we are thinking to travel in 3rd AC so can it be done?
Q2.- Please suggest economical places to stay as we are 5 Adults like Tirupati trust lodges and swami Vivekananda kendra in kanniyakumari?
Q3.-More and major sight seeing which are near these places,local foods with street food,Dams,national paeks ,mounrains,waterfalls etc in SOUTH INDIA to visit as these long trips are made very rarely and we are planning to visit every major places but without your support and suggestions this looks difficult?
Q4- Any changes.suggestions and itinerary are welcome ?
Waiting for your valuable suggestions
THANK YOU.