O'Neill is big in So Cal - probably from all the surfers - so one piece suits are very popular here.
I'm not a surfer, but my wife and I dove 7mm 1 piece suits for years until just recently, when we went to Dry Suits.
The key is a good hood and gloves. You should be fine. Where my wife and I noticed the warmth dividend most from a drysuit was on the surface interval. While others on the boat are shivering, we remain warm between dives, as we are dry (except for our hair...) This makes multiple dives more comfortable.
You shold be fine with your set up. Being sure to stay wraped up betwen dives, and taking a good rinsing off as you come out (as you know, salt water left on your face attracts moisture from the air....keeping you cool.) Most wetsuit divers bring a big dive coat or some sort of other heavy wind shield to don between dives.
In looking at my logs, it should be in the low 60's (61 - 64 in my books from September thru October) so I would think you'd be comfy.
You'll love it.
I'm not a surfer, but my wife and I dove 7mm 1 piece suits for years until just recently, when we went to Dry Suits.
The key is a good hood and gloves. You should be fine. Where my wife and I noticed the warmth dividend most from a drysuit was on the surface interval. While others on the boat are shivering, we remain warm between dives, as we are dry (except for our hair...) This makes multiple dives more comfortable.
You shold be fine with your set up. Being sure to stay wraped up betwen dives, and taking a good rinsing off as you come out (as you know, salt water left on your face attracts moisture from the air....keeping you cool.) Most wetsuit divers bring a big dive coat or some sort of other heavy wind shield to don between dives.
In looking at my logs, it should be in the low 60's (61 - 64 in my books from September thru October) so I would think you'd be comfy.
You'll love it.