Do I need OISC Regulated Adviser

[rajun13]

I am about to apply for ILR this month on tier 1(general) migrant last renewal letter says " my application was considered under high court judgement of 8 april 2008 for extenstion
Few queries still confuses me
1) do i need to write life in UK test
2) do i need to go through biometric
3) my payslips are online and have only 4yrs p60 as the current one is due in few months
4) My child is two years was born here and has visa
5) do we all ( i mean three of us) have to go

Please can anybody help me with this as I really dont want to give 1k to OISC Regulated Adviser for answering this