Another vote for The Freedom Programme, and then you go at your own pace. If they are kind and trustworthy and interested in you as a person, rather than what you can provide for them, they will have no problem respecting the pace you're comfortable with.
As above, watch carefully how they treat the people they don't "need" to be kind to, ie waiting staff, air stewards, shop staff, bartenders.
Are they respectful of your boundaries?
Do you feel that you are heard and understood when you communicate? Any feeling of "how did we end up talking about x when I raised a question about y" isn't good.
Pay attention to the relationship they have with their mother.
Do they speak with respect about their exes even if it didn't end well? If not, that's a no for me.
How do they drive? Aggressive driving or road rage when you're a passenger is a hard no from me.
Basically, time will tell as they ones to avoid don't always come wearing a tshirt announcing it, but there are often many hints along the way that we are conditioned by society as women to turn a blind eye to, or accommodate, in order to be "chosen" or not "on the shelf". Well done to you for being so aware and knowing you need to back yourself this time around.