I was reading your post and looked at the pictures thinking - wow, what beautiful hair - I had to do a double take at this quotes line.
You hair is beautiful - you are beautiful, and you should be very proud of yourself. The time thing will work itself out. I usually take hours too because I do other things while the conidtioner is doing its thing, but that's just me. You can, as has been suggested, sit under tthe dryer with the DC which will take off a chunk of time, and as you get more practice with roller sets, you'll be faster.
I think the most important thing - be pleased and proud of yourself - do not equivocate - your hair is beautiful all by itself; it's not necessary to compare with others.