A Tacoma is a good choice (though there are others). You can pull a larger trailer if you choose to go that way. I have a 98 Tacoma, which is the smaller version than modern Tacomas and only has a 5000lb tow capacity. A new one will have higher capacity.
But that 5000 pound capacity allows me to pull something larger like my 17'
Bigfoot, which by the way is more spacious than any other 17'
fiberglass trailer out there. It's basically the shape of a stick trailer, but built as a molded fiberglass trailer. Not "egg" shaped but otherwise the same as all the other trailers on this site.
I went with the
Bigfoot because I plan to live out of it in the summer. And I agree with Roger: truly making a life work with a trailer as a home is different than being retired and choosing to travel extensively in a trailer.
Norm is still completely right also, but I lean towards Rogers advice in this case. For really living, the eggs are small. All any of them have is a narrow aisle for floor space. It's just a "hallway". If there's a dog on the floor, all the floor space is taken up. These trailers aren't meant to stand in, unless you're cooking or going in or out, but not "hanging out", standing up.
I chose
Bigfoot because there is
space. I've had 3 people inside, all standing up, and not in each others personal space (though that varies person to person), with room left over for someone to walk through. We were not shoulder to shoulder. It's 8' wide, and doesn't taper, it has straight walls. 8' wide from floor to ceiling.
For me, with the reality of daily life: going to work, needing work clothes (which includes both nice stuff
and stuff that can stand up to a be trashed by field work), hanging out during possibly days of wet weather, having a dog, having
everything I own, meant a larger trailer than I really had thought I wanted. I don't care how much you simplify. Fitting all of your possessions in a trailer is HARD. I've been working on it for over a year now. To live anything like a normal life and still have what you need on a day-to-day basis without running to a storage shed multiple times a week is HARD.
For me, as a single guy with no plans to complicate my life anytime soon, I look at this as a fun challenge. But even as something of a minimalist and simple guy, I've hit a point where I look at what's left of my stuff, and have a real hard time getting rid of anything more. I'm down to being able to fit it all, but having lived out of a camper before, I don't want to live with every space completely crammed full of junk. Getting down to where there is some spare space here and there and you don't feel like a hoarder is tough. Especially for someone like me who likes to do my own work on things, so I need tools.
Sounds like you're committed to give this a shot and that's great. You'll learn all this stuff as well or better than anyone giving you advice right now, so that's pretty cool. Be sure to tell us what you learn! Moving into such a tiny space will no matter what be an experience. Doing it with a significant other and pets will amplify that. Whether in a good or bad way is up to the people and the relationship...