I am not familiar with that particular model, but we do have a 2012 Cruiser. I would say check the caulking thoroughly. We had to get our caulking replaced and the dealer we took it to said it had the stiff caulking and we should have the more flexible kind. We have some water intrusion issues to deal with now.
The rear kitchens are a real problem with traveling because that area of the trailer has the most bounce, resulting in all your stuff getting moved around a lot. Since you say it will be parked permanently, then obviously this is not an issue for you.
The only slide issue we have had was some gear teeth getting broken.
We have had numerous other problems, like trim around one of the slide splitting because it was not fastened properly in the first place, and the roof developing little holes. We have a new roof now.
It's always a good idea to thoroughly inspect the caulking and the roof once a year. If you cannot do it yourself, pay a mobile RV tech to do it for you. The investment is worth it.
2012 Cruiser Sahara 330SS
2015 F250 Super Duty diesel