GT85 is useful, but I'd invest in a proper chain lube as it will help your drivetrain last longer. Also suggest using an environmentally friendly degreaser, as it will still do the job but less harmful all round.
Sounds ok to me. Gets some brake and disc cleaner for the chain and gt85 for lubing.
Fenwicks cleaner 1L makes 11L £7-9 a bottle does as good a job as mucoff
Quick check, tredz 32.99 with £5 off voucher