Good Morning, Jon!
My answer to your question is Yes, with one caveat: that 70th street hill climb. Think half of Bay City Hill, and of course there is no shame in dismounting.
The entire route is very bike-friendly, in that it is mostly trails, and the street sections have nice, wide bike lanes.
Here are some other tidbits that came to me as the idea took shape:
Call it a "Perverse Or UNusual Climatic Event (POUNCE) Ride" - Everyone in this area knows that the coincidence of good weather and a weekend when you are free to ride is, at best, a happy accident. The POUNCE Ride is, by it's very nature, an opportunistic play. One which, for example, might justify the sacrifice of a day of yard work or a minor family obligation. Short notice and spontaneity are integral to its success, and we can do several throughout the course of the season. "Sorry I couldn't make it to (insert boring activity here)... Something came up at the last minute."
We could have a loose dress code of shorts and Hawaiian shirts for these rides, perhaps with bonus points for leis, sandals, or straw hats? Any GC member could suggest a route as long as it is reasonably well-planned and scouted in advance. If we have more than one suggestion for a given ride, we could vote on the GC forum.
Why don't you join me later this morning, and we can research it together?
Gary