sip scheme

#2
You can start a SIP with the same folio no.

It is advisable to have only one folio with a fund house, so that in a single statement you will receive all your investment details with that fund house. Multiple folios make it difficult to keep a track of your investments.
 
#4
Before starting SIP consider the following

Is it not better to have SIP in your hands -- you decide the amount periodically and the fund

In case of your opting to SIP in one fund you are tied to the fund for 12 months

Isnt it????
I do not understand your first point. Please elaborate. In any SIP we determine the scheme and the amount anyway.

No, you are not tied to a SIP scheme. You are under no obligation to continue any SIP arrangement. A SIP can be cancelled at any point of time by writing to the AMC.