You will need a pollinator for that Bing cherry. Van, Lapins, Rainier, and Black tartarian are most used. Of those I think Lapins is your best choice up there. Lapins is later and is more crack resistant than Bing. Both are better than Nadia. I like Nadia for being different, flavor is good, not great, has mild cherry flavors mixed with plum, its definitely not a stand out top tier fruit, but I did not expect it to be either. Good luck with your cherries!