Welcome Walter!
First of all, how big is your patio where you plan to grow roses? Do you have a water source out there or will you be needing to bring in a hose (I did it for years so ask me how) in order to water. Does your patio get full sun all day? Is it shaded?
I have grown roses in pots for about 25 years, so I have a bit of experience with it but my climate is very different from yours. I too second Burlington nursery for the place to go to for mail order mini roses. She is super nice and will talk with you about what would work for your garden.
I have Maroon Eight and I don't recommend this rose for a pot on a patio unless you have a big patio. In my climate, this rose is about 4--5 feet wide and about 3--4 feet tall. Great rose, but not a mini by any stretch of the imagination. I do grow mini roses, however. I have had great success with Ralph Moore's Sequoia Gold, Vineyard Song (aka, Bunch of Grapes) and Halo Sweetie. I also grow some of the smaller patio varieties but they can get big, again depending on where you grow them. I currently love Minnie Mouse which I also got from Burling. I also have Lavender Crystal and Diamond Anniversary. I have grown Sweet Chariot and consider Vineyard Song to be a much healthier rose than Sweet Chariot. Same with Diamond Anniversary. Not one of Ralph's better roses. I will see if I can post some pictures.
Halo Sweetie
Minnie Mouse
Sequoia Gold
Peppermint Parfait
Now, all this being said, I grow "non-mini" roses in pots as well. I have had good success with them but again, not knowing what your growing conditions are, it will make a difference. I tend to grow some of the "smaller" varieties of roses (they don't get that big). I currently have Sharifa Asma, Candice, a NOID (no ID) I grew from seed, Jubilee Celebration (which will I will probably move into the ground), but others would work as well. So, welcome to the forum! Glad to have you here!