The part you need to clean on the MAF will be easy to get at from the air filter box. Just pop the top and look down the intake for the vertical bar with the sampling 'horn' on it. Spray the parts cleaner into the little horn.
Check the bypass hose that goes from the accordian tube to the IAC valve for cracks/leaks before replacing the IAC valve itself. These are about $80 new and won't work any better than the old one if there are any leaks in the hoses.
