Of course, most replies will be much opinion, so here is mine: 1) IMHO, the Wouxun KG1000G is a great radio - it has a 50W output, but the best feature is being able to throw the chassis under the seat (or wherever) and remotely mount the very small faceplate anywhere. I have also used the BTech GMRS 50X1 - actually 2 of them, but that radio does not output anywhere near the advertised power output and the screen is tiny/hard to read.. but, it is cheaper..sooo... 2) any GMRS antenna is probably "good enough" - on both my Jeeps I use the Browning BR-450 which is a UHF antenna and must be cut/tuned (not a big deal) - but a "GMRS" antenna should not need to be cut/tuned 3) it depends on the antenna & where it's mounted, but to be safe I would remove it. Assuming you mount it where you can reach it, the GMRS/UHF "NMO" mounts are easy screw-off, so its very fast/easy to remove. Tram makes a very small (6 inch?) that works great, and would probably survive the carwash just fine.. 4) There are no designated GMRS channels (technically there, are but, like you, nobody knows about them) and in most areas the airwaves are dead - its not yet like CB as far as activity. 5) I dont have any pics, but, dont overthink it.. Mount the radio where you can see it, and mount the antenna where it works - be warned that experts will tell you that if it's not mounted in the "right" location, "it wont work" - dont belive it. Jeeps are notorious for not having any "good" mounting locations (due to the lack of a metal roof) and both mine are mounted where the experts say "is terrible/wont work" - and yet I can talk to my wife in her Jeep, also with a "terrible" antenna location, 25 miles away, and I can easily hit a repeater 70 miles away while sitting in my garage with the door closed.