You should have your oil changed twice a year, whether you go over 3k miles or not. Time degrades the quality of the oil just like driving it does.
I would also immediately purchase a new OVP and put that in. It will hopefully (and more than likely) clear up many of your starting problems, and the ABS and ASR light.
I would also drive the car for ATLEAST 1/2 an hour like you said you were going to do. But be sure that when you do, you punch it. I mean floor it from a stop all the way up to speed. Of course, do this as conditions prevail. But if you give your car a good hard drive (AKA an Italian Tune-Up), you will burn off a lot of the carbon and other crap that has built up. So drive for atleast 30 minutes and really give it a good run. These engines like that!!
Good luck and keep us posted!!!