Backfiring, sputtering, and stall

Update: I removed the old glass fuel filter and replaced it with a WIX fuel filter from O'reillys. and I retarded the timing from 10 degrees advance to about 6. It has since run a whole lot better. Question, I have a '71 360 that seems like it gets harder to start the warmer the car is, is this normal? Should I chalk this up to a learning experience of my first old car?

I can't believe it is on the road officially as of yesterday!