Mike,
You look very flexible with three layers. With all that rubber, how much lead do you need? If you are warm at 50* do you think you could do 45* for 30 minutes without being cold. Is your 7mm fullsuit fit a bit large to make room for the core warmer and the hooded vest? How do you measure up in comparison to the Pinnacle size chart for wetsuit fit?
Yes,
I am very flexible with all three layers, let me explain. When I first looked into wetsuits I was only on a budget that would not include drysuits. So my search started at my LDS.
I looked into semi-drys, and the full suits at 7mm. Wanting the semi-dry I ordered the Pinnacles Polar and when it arrived at the shop I went down to try it on. I tried on the medium large since their scales showed that for a 175 lb male.
Trying on the suit was an experience, I fought with it for about 15 minutes in the dressing room and then felt clostophopic. I immediately took it off, another 5 minutes and said, send it back.
My shop then asked what type of diving I would be doing for some time and I told them mostly beach dives (which are shallow) at Monterey with some boat dives; that's when they recommended the Merino brand for it's flexibilty yet incredible resilience against the cold elements of Monterey.
Thats when I placed my order for the ME-7 and then called Pinnacles directly and got some more advise from them. I added the heated torso and the hooded vest because I could interchange them throughout the year.
The merino linning is just incredible, just ask anyone that dives this type of material and they will tell you the truth. Even though compressions attacks thickness of a suit it does not remove the resilience of the merino linning, keeping that critical protection for the diver.
That video you see, has me with 22 lbs of weights and wearing all of my gear; 7mm at the head, 13mm at the chest, 10 mm at the groin, 7mm at the extremeties, boots at 6mm and gloves at 4mm.
The only thing that gets cold are my hands, they become uncomfortable if I'm not moving them after 30 minutes at 50 degrees. Moving them keeps them cold but movable and still functional for all my gear.
I have not had experience in diving colder than 50 degrees so I cannot comment on the resilience beyond what I actually dove.
I can tell about the order of placement on the three pieces; hooded vest, then heated torso, then the full suit. I tried it in different patterns and found the best combination with what I stated, incredibly warm.
The key to a wetsuit in my opinion is it has to make direct contact with your skin to restrict water movement. So when I place all three pieces on, the best contact first starts with the hooded vest against my frame, if I go heated torso first, I get areas around my shoulders that don't make perfect seals.
Lastly about purchasing a larger suit to get the other two pieces on; don't worry about going bigger this material stretches like you don't believe.
Also let me give you some advice about the semi-dry suits. They are better at retaining their resiliance against compression at greater depth than Elastiprene suits. However, this comes at a cost to the diver, they are much more uncomfortable to move around in than elastiprene.
You therefore have to make up you mind what type of suit is best for your type of diving.
MG