Your speak is better than you give yourself credit for. You can exchange “FX bus” with “effect track” and “00 levels” with “0.0dB”.
The short but harsh answer: YES. You may start all over by getting the EQ and levels right. Of course it is easier the less reverb effect tracks you used (read: the original reverbs used the same settings).
It is a bit hard to give detailed advice as I don’t know know your project in detail.
Good luck.