Assuming the extra zero (25000#) is a typo...
2500# and a wet bath means a Scamp
16’, and even then it’s easy to cross that line with options and/or gear if you aren’t careful. Casita
16’s with bath tend to be a bit heavier. Once you get to 17’ and up you’re typically hitting 3000# mark and beyond.
Of course you can get a Scamp
13 with a wet bath, but they’re pretty small.
Nothing in that size range has a dry bath.
See the thread “Trailer Weights in the Real World” in the General Chat section for more information on actual loaded weights. Post #297 links to a handy spreadsheet.