woks are stupid cheap. here is what i know. i have been around woks all my life.
for two people, a 14" is about right. its a good home size once you get to the point of doing that wok-toss move. having said that, i like the wok style with the one big hand grip handle on one end, with a help hoop handle on the other, so you can move it around when it is full. cut in half, you can deep fry a decent sized walleye. i only consider CARBON steel woks. any of those non-stick ones are destined for the recycle bin. done right, the high heat of wok cooking will fry teflon. when choosing a carbon wok. grab it and flex the bowl. it should be rigid. some are made of thin steel and it flexes. right or wrong, i find it annoying. dont buy one at the SF wokshop. that place is a tourist trap. if you saw the dust balls and grime at the store in person, you will turn away. i have two woks..the one i described above. and another 14" carbon wok that has two hoop helper handles. my stepdad (RIP) was a pro chinese chef and he could toss that wok, i cant with my office desk jockey forarms. your mileage may vary.
you will have to season, but if you are asking about castiron, you're there anyways.
i use a Thunder group wok burner i bought on Amazon for $98. it is awesome, since it has a pilot light. wok cooking requires shutting down the flame sometimes. it sucks to have to re-light the thing. the pilot light is a life saver. my wok is that hand hammered one on amazon..about $48. it is okay. i dont think it was hand hammered, and it was way harder to season than my other one, which i got for free..i bet it came from william Sonoma. hahaha..it is slick as snot tho.,,i am so tempted to weld a handle on it.
camping..truck camping. a wok goes with us. all the time.