If you're planning on doing real-time stuff with DAZ content, keep in mind that you'll likely need a different license which isn't cheap in most cases.
SmithMicro has released a version of Poser geared toward game developers. I have no idea how they deal with the licensing of their content for it though. Perhaps with their stuff its fine for use, but 3rd party content is subject to whatever their respective terms are.
You might check out Mixamo's Fuse. It's a royalty free character generator that allows usage in real-time 3D games. I haven't seen anything that prohibits adult content. The characters you create can be exported as .obj files at no additional charge, but if you want to use their AutoRigger there is an additional charge. They also have a library of animations you can buy too. If you order through Steam, you get 1 or 2 free rigs a week. They are getting a lot of complaints for this business model, which I hear. But at the same time… if it fits your needs, its probably a lot cheaper than paying a 3d artist. Just carefully do your research. I picked it up when it was on sale last month just to have it. I may play around with some stuff in Unity (which also has a market place like Unreal Engine 4).
In either case, you may be hard pressed to readily find (legal) adult real-time content to use commercially. I'm personally keeping an eye out for demand and sources.
If you're doing 2D stuff, you're fine with DAZ/Poser content.
Good luck and have fun.