Use purchasing a truckmount as an analogy.
Most would agree that for someone who is not mechanically inclined, it would be wise to consider what brands are locally available and serviced so most maintenance and repairs can be performed locally, by a service center that is familiar with the particular unit and has an interest in keeping it running.
I'm not sure about Republic Wireless' presence in your area, but I know they are not a major provider in NY, and they most likely piggy-back off one or the major providers.
Since you admit your knowledge is limited, you should look into what corporate stores are local to you like Verizon, Sprint,
AT&T, etc., where you will have immediate access to any support you need, and there is trained staff that can walk you through the process and help you with any questions.
Your business and livelihood depend greatly on your phone, now more than ever.
I would not consider any "third rate" provider for something so important.
Go with a local major player with a local retail location.