Lots of good manufacturers to choose from with solid construction and competitive pricing. If buying used, give very close attention to the condition and of the outer wall and roof fabric as these can be extremely expensive to replace if not maintained adequately.
If buying new - at a very minimum, order with:
Roof
"tall walls"
Second entry door/exit
As many windows as possible
If possible, position yurt with maximum southern exposure
If you can afford it and your manufacturer offers, opt for rain gutters and harvest the water. You can collect a LOT of water quickly on a 30' yurt even in a small storm.
We live in our 30' pacific yurt full time in the cascade foothills. Lots of rain here, as much as anywhere I would guess. Heat is by wood, well water and some rainwater harvesting, organic garden and orchard, propane hot water, humanure composting. Grid power is very cheap here but otherwise an 8 panel rack and small bettery bank (around $3k new, mostly DIY with maybe a consultant/engineer to look it over) is really all it would take to cut the cord and be 100% off grid without sacrificing any comfort.
Also, if you ever decide to invest in a backup generator - buy one 30% bigger than you estimate you will need. The cost investment might only be a 1-200 dollars difference, but the flexibility you will have in the future when actually having to use it will be well worth the money.
Lots of options with a yurt, that's the real beauty. You can make them as simple as a dirt floor and kerosene heater, or a completely custom/craftsman urban getaway and everything in between.
Even though it is not your prority right now; build/buy as big as you think you could be comfortable in long-term. Because the more time you spend at "home," the more you'll wish you were at your yurt!