Well, if you know what to expect from those two breeds, who tend to be on the higher end of the activity level, then there's not much extra I could tell you.
Overall, I like aussies. I've worked and been around them before and find them overall friendly, extremely intelligent (except for one of my clients' aussies.......
....he's as dumb as a brick), and they like to keep busy.........a
s in ball or frisbee or whatever.
Heelers are very similar to aussies, but in the little experience I have had with them, they are even more intense, and although I've met a couple that are great, I've met others that are dog aggressive and not all that human friendly either. But that could very well have just been on account of unsocializatio
n.
I hate to say it, but if everyone is ready except you, I would probably give in and get another dog. Who knows how long it would be before you are ready? But I will repeat I hope everyone is ready for some serious training for this kind of mix. Heelers, as well as about 1/2 the aussies I have met tend to have dominant personalities, which means thorough training is a must as they will push your buttons every chance they get and try to outsmart you. They are two of the most intelligent breeds out there, and put them together, and you may have super intelligent dog. Just a thought.
But hey, if everyone is ready for it..........I say go for it as well.