I know this can be a minefield & with someone new you don't really know what they're like until you meet them.
It may sound naive but to me honesty is the best policy. As a provider it's always best to set your stall out clearly so as to attract the kind of client with whom a meet is likely to be a success & may lead to repeat bookings.
From a client point of view, he needs to respect the provider & to withhold contact info is a red flag-burner phones & other methods of discreet contact are always available.
As a client I want to have a great time with someone I'm attracted to so so I always give a phone no. a physical description & state what I'm looking for, which should coincide with what's on the guy's profile.
I'm sure you'll develop an instinct for enquirers who are genuine, if you haven't already done so. You're a hot guy so you're sure to get many enquires-if it feels good do it, if not don't! ?