Hi DaveR - Don't worry too much about a mess of different sounds when you first start calling. What you have already is fine, and is especially fine, has there are about 10 serious predator hunters in both Ma., and CT. combined. As time passes and you miss a few, and get winded a couple times you will need both new set-ups and maybe a few new sounds.
I'm a believer its how you blow the given call that gets them coming, not the actual sound. This is a rule of thumb, if you are callin' a new spot, using a badass rabbit in distress series, you should have a coyote response in no more than 5 minutes in New England. After 5 minutes or so I'd say your chance of a call-in drops 85%.
Also do not make any barks at all (I think barking is bad), and if you feel you'd like to try howling, just make some none threatening lone howls at the beginning of your first series of calls.
Really the hardest part of calling in New England is there just aren't that many coyotes, so you will make alot of set-ups to call a dog once you are good. When you are new, and are gaining knowledge, calling a couple a year is good !!
Where in Ct. do you live, as I can probably save you a few years of trial and error?