I have idle issues

I have idle issues. The problems are, loss of power sometimes, would idle ok in park or neutral sometimes and sometimes it is rough. In gear it usually idles rough. Gets worse as gas gets low. Most recent it started to die in park and neutral. Oil level is good no signs of coolant. Coolant does not over heat and good. Transmission fluid is good. Somethings I have done. Cleaned the maf, egr, looked for cracks in air intake houseing, looked for and listened for vacum leaks, added gas and oil additives. I will be replacing plugs, wires and such today then fuel filter if still not fixed. Other things need addressed and not sure if it has any wierd conections. Brake fluid leak in one of the drums. Front brake discs and pads need replacing. Driverside break light goes out when lights are on even after bulb replaced. No check engine lights, no oil lights. Had corrosion on battery terminals but cleaned off with wire brush. Starter sometimes gets stuck. Once in a awhile a quick squeal from belts when starting. If possible to list things to check from most probable to not as likely would be very helpful. Trying to keep costs as low as possible and will be doing work myself. Thanks in advance. Chris