Payroll wrap up and set up

We have become a Ltd company in February 2013, and have become registered as employer on 5th March 2013.

We have processed three times payroll for three members of staff for one month using the HRMC free tool, and now need some assistance with the wrap up of 2012/2013 , getting all the right information over to HMRC.

Then we need assistance with setting up RTI and managing it on a month to month basis for approx 4 staff, and week to week basis for 2 staff. Possibly up to 9 staff in the near future.