Benefits/welfare problems.

I am in the UK and got a letter today my Disability Living Allowance benefit is ending and I have been invited to claim the new benefit Personal Independence Payment,these are benefits to help with the extra costs of being disabled.At present I am getting £307 a month for this but that will stop in 4 weeks.If I get PIP all well and good but if they refuse me not only do I lose £307 a month but I also lose from my Employment Support Allowance and extra £60 a week which is £240 a month so that is £547 which is half my total monthly payments.It is scary cos I have to fill in a 40 page form and have a face to face assessment with the health assessment practitioner.I phoned up today and registered my claim,it was fairly straight forward and they just asked me for some basic information.Next step wait for the How your illness affects you form and fill it in,40 pages long it is.Send it back to them and presumable wait for an appointment to go for my face2face unless they decide they have enough paper evidence.I will be asking my doctor and other health professionals for reports to support my claim.I have mental and physical ailments so I can't see them refusing me but it is a question of whether I get standard rate PIP or enhanced rate.More money than now or less.Wish me good luck.I am not going to worry cos I am resolved if I don't get what I think I am entitled to to go to appeal and all the way to the court tribunals.I am anxious to have to manage on less money.