Figure out information for opening Applait subsidiary in Singapore

We already have the following info:

Applait Technologies LLP can open a subsidiary company in Singapore
We need one "Director" who is a citizen in Singapore.
Paid up capital is SGD 1.
Applait Technologies LLP (the parent company) can initially own all the shares, and later on they can be transferred to investors and employees.

What we need to know:

How much will it actually cost us?
Do we need to go through a legal firm?
How will taxations for revenues earned by the Singapore subsidiary work?
What bank options do we have in Singapore? Does HDFC have any branch there? If yes, can we use them? If not, what are the alternatives?
Can we remit money in the parent company from the subsidiary?
If yes, what are the taxes involved?
If no, can all of us (partners) open an individual bank account in Singapore?
If we open individual bank accounts, how is the individual taxations applicable? In Singapore and in India?
How best can be avoid double taxation, wherever possible?

applait / meta