Welcome to the forum! I started a Dome size database thread that has a lot of good size info in it... www.breastnexus.com/showthread.php?tid=19940. Everyone here really helped make thins a great resource...
I'd look at the sizes and maybe cut the sizes out of cardboard and try them on you breasts.... large domes for people who have small band sizes is problematic.... with sticking out off your chest.. getting the silicone rings helps some and yes you can pump one at a time but now it takes twice as long.... I had uneven breast sizes too and by pumping one more than the other they have equalized.....
I'd look at the sizes and maybe cut the sizes out of cardboard and try them on you breasts.... large domes for people who have small band sizes is problematic.... with sticking out off your chest.. getting the silicone rings helps some and yes you can pump one at a time but now it takes twice as long.... I had uneven breast sizes too and by pumping one more than the other they have equalized.....