The TX/RV radio world is just that... another world of where to begin and then where to stop? Could be another hobby for you??
For distance and economics I would go the GMRS route if your willing to spend some money on the license ($35???). 462-467 Mhz. thats the best your going to get with a over the counter radio with minimal licesensee. Anything else would be a big maybe and lots of enterference.
Yes- you do need to be "registered for gmrs with the FCC. however for short periods in your life you'll use it? I'd take my time registering.. LOL.
Keep in mind you only need a license if you transmit. listening is FREE!!!
However if your going to get a license you will first need a FRN number- apply
HERE FIRST
Once you get your FRN number then you can get your GMRS license good for 10 yrs. APPLY
HERE SECOND
Nest select a radio--- ANTENNA- ANTENNA- ANTenna then WATTAGE OUTPUT. is whats critical for distance.. obviously you will be stuck with what the hand held comes with. so make selections by close observation and print of radio specs.
I've purchased one of these in the past - BAOFENG GM-15 Pro GMRS. IF you go this route? -
you could also go the GMRS radio route and look for the radios that can be "unlocked" so you can listen on all channels. I DIDN"T tell you this! LOL.