They arn't too difficult to put up, if you can afford the modern ones, no probs, some of the older types take up to an hour to erect, but then by the time you've levelled ya caravan and plugged and plumbed and unpacked it can take just as long! we find taking bare minimum always helps.
Part of the fun of camping is the setting up, get to know the neighbours and pop that bottle of wine on a lovely summers evening! she says in awe, waiting for the summer!
Trailer tents are just glorified tents, you still get all the noises around you that keep you awake at night, whereas the caravan blocks those annoying little noises. But hey a little more wine and you'll not hear a thing.
There is seems more room in a trailer tent
Could you borrow one to try out, there are some good camping shops and caravan shops around where you can get a good look and fiddle around a bit. Or maybe a really cheap second hand one is a good start, you may not like it, after having a caravan, but then you've not spent the earth.
Good luck and have fun looking!