About 10 years ago, I was where you are now. That's when I began down the slippery slope.
Had a 4 cylinder Tracer.....
Bought a very small 1000 lb popup.....
6 months later, changed to a minivan......
1 year later, changed to a very light weight trailer.....
3 years later, changed to a 1/2 ton Suburban.....
1 year later, changed to a 28' Sunnybrook trailer.....
5 years later, changed to a 1 ton full size van.....
The was last year, what next!... stay tuned!
See a pattern here?
It all started when I wanted to see, just out of curiosity, how much can I tow with this little tracer.
Also, it seems like a painful path to follow, but it's not terribly far off from what a lot of people do. Although we are now very happy with our present setup, I would NEVER have run out and bought a full size V-10 van and a 28' trailer without moving up to them.
I would suggest getting a popup around 3000 lb. May a nice used one. It will get your feet wet without a lot of investment. Don't take it on lots of hills, etc. Then, if you decide this might be the recreation for you, you can consider a camping rig you ultimately want.
If you decide, like we did, that you love the lifestyle so much that all of your vacations/trips would be centered around the camping rig, you can justify the additional costs. If you decide that you'll only use it for one or two weekends a year, than you might not have to upgrade at all.
Hope this helps.