How many months bank statements do we need? Is 5 months enough?

I work in a school so everyone's on holiday at the moment

Do I need to write a letter or anything?

we are applying for ilr using set m visa form my wife got the spouse visa before Jul 8th 2012 We are waiting for pay slip for July for my job should be here on Tuesday Do we need it for the application? I have July's statement to prove the money went in and the previous payslips from January to June...

Do I need to fill in a form for the biometrics resident permit on a seperate form if im going to do it at a premium services centre?

Doing the part about public funds. Do I receive the public funds for child benefit, child tax credits and working tax credits? So I don't put any amounts in her boxes?

Our marriage certificate is in Japanese, but we have a translation. Do we put both in?

Is it ok to print it off in black and white? (a bit obvious maybe but the government can be a bit pedantic)
Also do I need to print off the first 4 pages? as they are just waffle

Do I put my savings amount in 8B?

I'm British and my wife is on a spouse visa Is their a list somewhere of all the stuff I need to send with form M? I should be able to send next month. Do I need a paper statement from my bank? As I mostly do online banking. The biometric stuff we do can be done at the premium centre, is that correc...