Couple of things you need to take into consideration. First is that the term ultra light means a light weight trailer which is not designed for comfort, storage or amenities that you would normally find in other "heavier" units. It also is not built on a heavy frame and as such will not hold up as well as more studier built units. Read this to mean it is not a full timing unit, it was designed for weekend camping.
In my book Finding the Perfect RV (free), I walk the reader through determining their requirements vs what they want. As a full timer, storage is a requirement, it is not a nice to have. For a weekender, storage is not a major concern as living out of suitcases or a backpack will work for many people for a few days. Not so for the full-timer.
Best of luck
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Good luck,