I wish you the best of luck. You are looking to enter a difficult market at a difficult time. With a new product that doesn’t have brand recognition.
Most of the recommendations are good. I think you would want to bring it in a little long so they can be cut to measure for the customer and their preference in pads installed. Double trigger and only in the basic configurations to start. I would start with a limited caliber selection 9.3X74R 450/400 450 31/4 and 470. and maybe if the maker can make it weight appropriate a 500. All of these have ammo available.
Bill