I agree. If nothing else it will shape your training from there on out...otherwise you could spend a year doing some form of combatives that turn out not to even translate to the situations you find yourself in. Then you'll just be PO'd that you wasted time.
It's training...treat it as training. The goal isn't to win ECQC, it's to learn from it (I'm saying that as much for myself as anyone else). If I could convince my wife to put her body at risk in that class, I would want her there. If I could get my 70-something year old dad in there, I would. Don't worry about getting yourself squared away first. ECQC will square the F out of you.
The MUC section alone is going to be great for your head.