Okay, got all my guys to level 60, but I'm too broke to afford augments and just realized what my problem likely was; some of my team's weapons are still like level 13/20. (Some are 50 though)
I'm too impatient to wait for my probes to mine more miranium/money, so I'm gonna go ahead and give it a try tonight, but if I fail again, I can just revert to my current save.