I'm not sure about the Cherubini's sailing characteristics. The original reputation of the Cherubini was largely related to the level of finishes and a "traditional" design.
The spit rig (in this a staysail schooner) is different than sailing a sloop. Some people like the options that they would afford; and others rarely use the mizzen or staysail. If you haven't sailed a "split rig" before, I would strongly recommend that you spend some serious time on one before you embark on that road. You might love it for it's flexiblity, appearance, etc. -- or you might not.
I've NOT SAILED ON ONE MYSELF. I suspect the the sail plan of the Cherubini really would lead you adjust sail downward to sail her at less than a 20 degree angle of heel in fresher winds. As others have pointed-out, the split rig (if you use it) may allow you to take care advantage of that opportunity. If it's like a lot of other boats like it,
In terms of sail handling for two -- I would think that would work alright as long as the two were on the mission. I would think that for one person, it wouldn't be all that easy if you alone. Of course, all things are relative. The question is not what you COULD do, it's what you would enjoy, or your spouse would enjoy. Then there is the question about what happens when you have to get-out there when something jams or whatever.
Our boat has a lot sail in a working jib and large main (it's a J/160). I can handle it alone in most circumstances; but that's with the help of an autopilot and a pretty full instument package. [I guess I'm one the few who values more than my Windex :^)))))) But it's really rigged and designed to be sailed by a few. Docking the boat is the one area that two people really are necessary in most circumatances (sometimes, that's not enough for comfort in difficult situations.
So back to the questions below: i) how much experience do you and your bride have (including split rigs); ii) where are you going to take the boat; iii) how physically fit are you, etc.
I think you could grow into the boat, if you and your wife are interested and capable. When we went from a 42' boat to a 53' one with a lot of sail, we were somewhat intimidated. That was 13 years ago.