Big1Dog
You may want to consider where you will be camping, before making a decision on the size of your Class A. Some National Parks limit the size of the camping unit, as do a few state parks. You can always check this out beforehand at the National Park Service website.
Other considerations might include the increased cost of a larger unit, such as maintenance, camping fees, fuel, ... etc.
My wife and I opted for a 30 footer, after looking at a 32, 34, and 36. We did not get slides at the time we purchased it, but, now, in retrospect, may have decided differently. The jury is till out on that one. We have not had any problems with the capacities and capabilities of the smaller unit, finding it easier in maneuverability. Since most motorhomes are approximately eight feet wide, the major difference is, then, in the length. I would have both you and your wife move around in the unit, to see if you are getting in one another's way. Try using the bathroom, shower, cooking facilities, dining area, and living room area. You will be amazed at how quickly you can adapt. But, this is true of most camping units. We came up from years of tent camping, and then boat camping right into the Class A. we found it was no big deal to adjust to it. I am often curious if things would have been different if we had opted for the slides, but those too come with their problems and follies.
If you are confused about the size, it is always a good idea to ask your camping buddy, that is, "The Mrs".
Make a decision, stick with it, and don't look back saying, coulda, shoulda, woulda.
On another note, I would certainly have liked an Entegra Cornerstone. Perhaps in another life.
Whatever you decide, be satisfied with your decision, and have many safe and happy journeys.