I reckon if you think that camper is the one, just go for it. You won't regret it.
There are so many other good campers, and we'll all have an opinion about why this one worked for us, or didn't. There is no perfect camper, only the camper you can afford and get to use.
I will put my hand up and suggest that a high quality soft floor camper would compete. I say this because you've got two children, who grow and need more space. Also, your littlest camper will be taking up more space, with possibly a pram, a portacot, a high chair and all the things that we use for babies these days.
The better soft floors are as easy to set up and pack away as a hard floor, and offer a lot more camping space, now and into the future, plus a bunch more storage space for traveling. These will also fit your budget, plus resale will be every bit as good and the sale process easier because there are less walkway campers on the market.