I, too, work in critical care and find it frantic some days. It's sometimes a difficult environment to be in, but it's good experience to have, especially if you want to go into HBO, which I, too, have just entered. It is recommended for HBO nursing to have ICU experience for most places.
I am not convinced by what you've said that you want to be in HBO, so check your gut on that. It's a much slower pace, but you get to know patients well, and where I work, we do everything from wound care to case management to billing to TCOMs to running the chambers (monoplace in my case) to using down time to learn more about hyperbarics. If you enjoy learning and being part of hyperbaric growth, you'll love HBO. If you're just looking for a job that isn't critical care and have no great interest in HBO, this might not be the job for you.
I don't know what HBO facility you're looking at, but we sometimes get inpatient clients, some of whom are on vents and drips. You need to be prepared for that possibility.
Hope you make the best choice!