I believe the published limit for deans is 60a
That's all? Time to buy some ec3 and ec5's and swap them all out, I thought it was a bit higher than that(just checked and your right though).
I guess there's a simple test: I'm going to run it on full throttle for 30s. If the connector isn't hot, it's OK.
They're also rated for 75A 30s pulses. I doubt I ever do a full throttle run that's longer than that. The only issue is heat, really. If it doesn't get hot, I can't see what the issue is. (Famous last word... )