My coax was made to length by me
In all my years of playing with radios ( aircraft and CB) I have never had excess coax. As long as the connections were done properly there shouldnt be a problem.
An old furphy from the 27meg days, was that coax had to be in 9' multiples (1/4 wave length). If that were true, what length of coax would you nedd for a radio that could operate from 3-30 MegHz???
Most antenna bases you buy in the shops, have the length to allow mounting of the radio and antenna just about anywhere.