Ivon

It would all depend on what depths I had been doing previously on the unit, and how many hours I had on the unit.

Also if I have already had a brown trousers moment, as it will come, how I dealt with it.

Me, 50-60 hours
46m max
Bailed out twice, once possibly due to over packing did the deco and came out on O/C and once as a precaution inside a wreck, with algae looking like the Star Trek scenes, stars flying past at a million mile an hour, made me dissy to say the least but sorted it and went back on the unit.

I would 'personally' go for it as I feel confident enough to deal with any problems now, but still have a healthy respect.

I think you have to decide what diving you are going to do and stick with it, I don't think it's the best thing switching between O/C and CCR for deeper diving as your not keeping on top of vital skills.