Jim,
I think you will find the cockpit in the Venture 23 will meet your needs very nicely. The cockpit is approximately the size of the cockpit on the C-Dory 25, and the increased space from a CD22 is noticeable.
As for the deeper "V" of the hull, it has more dead rise than the CD22 but it's still pretty shallow. As in all things nautical - it's a tradeoff. Personally I think the Venture 23 (mine is actually a CC23 "Venture," but they come from the same mold) is very well engineered. I find that if it's too rough for the CC23 (or my previous CD22); I don't want to be out Anyway!
I certainly agree with your choice of twin engines - nothing like having the built-in redundancy for the areas where you'll be boating. I would be curious about the cost and weight difference between the 60hp and the 75hp engine(s). At what power level are counter-rotating engines an option?
You will have a ball fine-tuning various aspects of your new vessel. If you'll want it mainly for cruising or fishing it may cause you to make some choices (but the boat is great for either/both activities). Being in Newfoundland, I'm sure you will want the best possible camper canvas arrangement.
The Venture 23 is available with single burner Wallas whereas the CD22/25 uses the two burner model. I believe the limitation is largely due to the size of the available-counter space. I have the single burner model on "Katmai" and although it works fine (at present), the amount of heat generated seems significantly less than I experienced on "Naknek" with the two burner Wallas. (...but there is also the possibility that my current Wallas isn't performing to spec's.) Wallas' are great units when they work. They are very pricey, rather finicky ... and Expensive to repair. (Knock on wood) I've had good luck with both of my Wallas's but I make a point of carrying some kind of backup stove/heater when on long cruises.
At this point, if I was outfitting a new vessel I would seriously investigate other heater/stove options. Many of the C-Brat's in the pacific northwest seem to like units called an ESPAR or Dickinson stoves. I am not familiar with them, but there is a lot of info on C-Brat's about them. From what I read they are no more costly than a Wallas and significantly more reliable. ...might be worth checking-out at this early stage of design and construction of your vessel.
Last item. The Canadian import taxes will likely be a major item. Could you save any tax money by planning your delivery trip ALONG WITH A VACATION, and take home a vessel with enough hours on it so you could be importing a "used" vessel? You might save yourself a bundle by boating for a week or two down here, and importing a "used" vessel back to Canada.
Best,
Casey