Weirdly enough, I get a crapton more cancellation spam than you do. Is there something special about marble blocks? I'm usually just using wood blocks of whatever tree I felled.
You shouldn't get hardly any cancellations with proper technique (making sure to not dig out too much at once, and minimizing the amount dwarves can get pushed around), also there's what I call the "hatch trick" for the bottom layer: where instead of walling off the bottom layer, you make a hatch over the downstairs, then continue digging, the hatch stops any water pursuing the miner. Dig down until re-encountering heavy-aquifer, or the caverns, or dig a side-of-the-map drain, with the bottom drain established go back and build the walls, bottom drainage more reliably keeps water at depth 1 than pumping does so produces way fewer suspensions. Also DFHack "autounsuspend" function is awesome.
More back on thread topic, I usually make between 3 and 6 of my starting dwarves career military, if I bring 6 military, the 7th is +5 Herbalist/+5 Cook so I really value those skills, I tend to think that Herbalist is all you need on maps with plants, it produces a lot of food and with enough plants to gather levels very fast. Cooking some of the booze makes very large prepared meals very cheaply.
Now, for a glacier or something, I'd probably just bring quite a lot of garden vegetables to brew, they are cheap and come with free bags, having to dump them out before they can be brewed is only a minor irritation. You need about 40 berries to make enough booze for the starting 7 + immigrants until the caravan arrives, it's 80 embark points but you get 8 free bags, strawberry seeds are cookable. And for food just egg layers.
Ponando, I watched your vid again at super slow (10%) speed to make sure I understood what was happening. I had not noticed the meeting zone before. Cool. What level does your miner have to be to have a reasonable shot at "gutsing" it down to the caverns? 5 is evidently not enough. I've tried that before.
I honestly think this idea is nonsense. I'm sure it used to work in some distant past version of the game, in fact IIRC the thing that made it impossible was dwarves pausing between mining tasks.