Tuff to Start

I have a 1979 Chrysler Cordoba (slant 6 ) that gets very tricky to get started in the colder months (combination of cranking too long not wearing out my battery- which was replaced in September with tune up knowing how cold weather treats me). So, I have a strong battery in it, which I even keep on a charger at times. I have read where the slant 6 can be very tempermental at times, mine falls in this category for sure!

My car has always been tuff and tempermental to start (even was that way for my great aunt- she gave me the car). I don’t have much money to throw at trying to trouble shoot and guess at this car. I normally have to really pump on the gas while cranking it to get it to turn over and catch for me. At times, im under the hood with starting fluid as well. Does anyone have other suggestions to help make my cold starts a little easier on me?

Thanks

Brenda