I am not going to act as if I have been hogging for years because I haven't, but been on alot of scooters and such. If it was me and my dollar I would look at a couple used honda 450 foreman S's and call it a day. To me the 2002 for the money are the ticket(selectable 4x4).
2 scooters $7000
26"mud grips $900
racks $200-400 providing you can build em
Your wife might also like feeling more independent and in control. Know mine does
That's what I started hunting with. Two Honda Foremans, a 2002 and 2004. I put dog racks on the rear, and a flat rigging board on the front. A few years later, I bought a Kawasaki Mule 4010Trans.
Since the purchase of the Mule, the Honda Foremans have been retired, one pulls a roping dummy, and the other is currently out of commission from me playing too hard.
The ONLY advantage I have found with a four wheeler is that you can get to a few more places than a UTV. That said, I have had my Foreman with 27" Outlaws stuck, as well as the Mule.
The UTV can haul 7 people, 2 in front, 3 in rear, and 2 on the jump seats. It can also haul 3 dogs in front, and 5 dogs in the rear. Has two gloveboxes, a large trunk in the front for storage.