if you like double and red, 'professor charles sargent' is an old classic in the south. the flowers are very full and a beautiful dark red. i don't grow that one but see many around old homes in my area. seems like they bloom in mid-winter here.
this one may be fairly easy to find in nurseries.
i would offer you seed but have given all of this seasons' seeds away. of course, you never know what you will get from seed so i would shop your local nurseries while they are in flower to find one that is attractive to you.

Here is a link that might be useful: camellias at wintergarden

Try "Bella Rosa". It is red, large to very large and formal double. You need to check with Nuccio's Nurseries at:626-794-3383

I prefer Coquettii aslo called Glen 40.... deep red.

Here is a link that might be useful: lovcam

One of my favorite camellias is 'Governor Mouton,' which is a beautiful shade of red with white variegation throughout its petals. It is the first _Camellia japonica_ that I grew successfully as a teenaged gardener. After nearly forty years, the plant continues to thrive in our Zone 7B garden; and to my knowledge, it has never failed to bloom profusely from February into March. If January is warm enough, it will sometimes bloom in that month, too. Blooms can appear as early as December, but, for us, the profusion of bloom usually is in February.
'Governor Mouton' is also known as 'Angelica' in the nursery trade, and there is a solid red form called 'Aunt Jetty.' This family of camellias has been grown in Southern gardens for at least two hundred years. The flowers are peony form and occasionally semi-double. The variety is quite cold hardy.

The original plant was on the grounds of Governor Alexandre Mouton's plantation in Louisiana. I like the variety so much that I have four specimens planted in different locations around the yard. The variety is a vigorous, fast grower that forms a broad spreading mature plant, if grown in full sun. In shade, it tends to be willowy and tall. Our oldest plant is in shade and is very tall but not very broad. The noted camellia specialist, Dr. Harold Hume called 'Governor Mouton' a "first class variety" in one of his works on the genus _Camellia_.