I'm getting ready to put up a new Maco 5/8 wave GP and it's been a while but.....If I swr tune this antenna with it temporarily mounted on a 4 foot tripod away from EVERYTHING using the same coax I will be using when mounted on my roof will I at least be close to tuned once in the air? I don't want to drop and re mount this over and over and to tune it once mounted isn't going to be easy. Any thoughts are appreciated.