The very best way to handle this is to enter listings yourself. Pro doesn't do much, as you will find out.
The other option is to pay for syndication. My firm does syndication that automatically gets our exclusives on Trulia. If your firm won't, then you will have to enter the data manually with the syndicator. I don't know any syndicator who harvests from RLS, which is what REBNY members all use, although your firm may give it another name in house.
All the best,
Licensed Real Estate Salesperson
New York, NY