हम उस देश के वासी हैं, जिस देश में Shiv Ganga दौड़ती है

Hi,
Please let me know/clarify below
I scheduled my journey in the follwoing manner
1.I want to go to Secunderabad from Valsad by Konark Exp. No.1019 from CST.
2. I want to...
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journey from Valsad by Karnavati (reservation from Valsad upto Secunderabad).
3. I want to get down at Borivli and resume journey from Borivli to Andheri & Andheri to CST by Mumbai-locals on the same day, as Karnavati does not go to CST and Konark Exp. is from CST.

Is it reqd to take tkts from borivli to CST or reserved tkt from Valsad upto Secunderabad will enough
Pl clarify / suggest..
Regards