Quick answers to your questions are:
Regarding Moretti - especially the opaques over the transparents...these are quite soft! When working with WHITE especially - whoa! A tip to turn the "football" back to round: Remember the glass is drawn to the heat. If you heat one of the "short" (flatter) sides of your football, then flip the mandrel and heat the other flatter side - working and flipping first one flat-side-up, then (opposite) flat side up again, this should help to pull those pointier ends to the flatter sides and help round out the bead. Then give it a nice even heating and spin the entire mandrel in the flame to evenly heat the entire "donut".
Regarding the CiM - ain't it just dreamy!?! CiM colors are some of my favorites! On the pumpkin - especially the "dark" and "odd" versions - these are sort of streaking colors and will show variations of tone.
Bullseye, being a lower COE, is definitely a stiffer glass! Because it will take some time to learn to "tame" and control the moretti and CiM (softer) over the Bullseye (stiffer), you will probably feel the Bullseye is easier to control at this point. Give it some time and practice, though, and you'll get the hang of both.
Just remember - you can mix the Moretti and CiM (both COE 104) but don't mix these with Bullseye or you'll have some annealing and cracking issues!
Glad you had fun! Don't give up and know that practice will make perfect (donuts and rounds!)