Ok, man that was a long day, but changed the following:

Coolant - old nasty rusty coolant in there from the last owner

Fuel filter x2

Air Filter - they did not do a good job of maintaining this car - air filter was rusty and dirty, almost broke in half when trying to get it out. New one slid in perfect.

Automatic transmission fluid and filter - used castrol dextron III/mercurion - will this be ok?

Power steering filter/fluid - I was told to use "old type" fluid to flush and then standard PS fluid so I used TYPE F to flush, then Penzoil power steering fluid to refil.

Oil - One thing that concerned me - I ordered all new gaskets with my oil filter, and there were 2 small o-rings smaller than a dime. I believe they go on the center rod that goes through the oil filter when replacing the filter element. There were two small black pieces on the rod, but they would not come off - seemed like hard plastic. Do I need to get these off, and replace with the gaskets I have now?

Took the car for a drive after the above was done, and runs totally different now. One issue that persists, is it "bucks" a little when I let off the gas. So say im going down the road, and completly let off the gas... instead of just slowing down, it gives a kick and starts to slow down. What could this be?

Ok so I know this is a long post, here is what I had questions on, if anyone would not mind responding -

1. Is castrol dextron III ok for the ATF fluid? Im thinking of changing the ATF fluid at the next oil change as well since I did not drain everything, just replaced the filter and what was in the pan.
2. I used type F ATF fluid to flush the power steering, then filled up with penzoil power steering fluid - is this ok?
3. The oil filter assembly "rod" - does this need to have the two smaller than a dime gaskets replaced?
4. Is there a way to resolve the "bucking" that happens when I let off the gas?

Thanks again everyone!