To the OP: As you can see, there’s a lot of fiddling around that accompanies repurposing something based on a high end commercial radio. That’s fine if that’s really how you want to spend your time.
But for many people a decent radio, built to be sold as a GMRS radio, such as a Wouxun 805, 905, or 935 will be more than good enough without concerns over software legality, tuning partitions, needing a knob guard, or any one of a number of “perfect except for qualifiers” listed above.