Hello and welcome!
Its nice to see someone that has done their research, and loves the breed like we all do. Yorkies are not for everyone, so learning about them is very important.
Sorry, but I would not buy anything from dcdogfinders.com. At best, they appear to be horrible breeders, and at worst, they have a lot of puppymill characteristics. As yorkiekist suggested, YTCA.com is the best place to ggo to find a GOOD breeder.
Since "Morkies" are essentially mutts, they have absolutely unpredictable qualities and characteristics. They could look and act just like a yorkie, just like a maltese, a mix of both, or nothing like either one. They are also likely to inherit the worst of both breeds in terms of diseases and illness susceptability. No quality breeder would intentionally breed a mix.
If you have any specific questions, feel free to ask! Or, you can just do a search or browse through old threads.