Possibility of getting Family life as parent visa?

[fred09]

Hello members,

I came to UK in 2014 from South Korea and I am currently holding a tier 4 visa and it will expire in 3 months. My British ex-partner gave birth to my son in UK and he is now 2 years old. We DO NOT live together. I visit my son regularly. I would like to apply for the Family life as a parent (5 years route) visa. I have around 6K in my bank account at the moment.

My question is:
1, How many chances do I have to get the visa?
2, I am really confused by the financial requirements as home office did not give out a specific amount that I can follow. Can anyone suggest a number?
3, If I go ahead and apply what kind of evidence do I need to show the home office.

Thank you very much for reading this, please do reply and any help will be greatly appreciated.

[fred09]

It should be FLR (FP), forgot to add it in the title