As someone that has probably spent way too much money fixing up my current coach, my advice is to opt for one that is already in good condition and question any money you may spend on it to fix it up more.
I paid a bit over $20,000 for my current coach 2 years ago, which was already well updated and in about as good of shape as one could reasonably expect of a 15 year old coach, and in those 2 years I have spent close of another $10,000 on maintenance, updates, and upgrades of which perhaps $2,500 were honestly necessary (brake repair, new batteries, dash air conditioner repair, fluids flushed), and another $2,000 were probably a good idea (TPMS, GPS, spare tire and carrier, new wireless backup camera, even the gas BBQ grill probably falls in this category), the rest starts to get a lot more gray, like the $600 I spent on a magneshade sun screen for the front windshield, or the $25 I spent on a high output LED porch light, or the $95 I spent on a Gen-Turi generator exhaust stack that I have only needed once, or the $100 I spent on a used (new in box) Sani-Con Tank buddy, that is still new in the box after over a year, even though they retail online for $250, is it a deal when you don't use it?