Just from the pictures Jarrod, the first two ones are certainly
interesting and challenging... I do not have any success in back-budding
radiata on such as long stems. I am not sure if you would seek advice from
other more experienced members?
The one on the second row is still young? I guess you would have a fun time
with this?
I like the last two best. You should have little problems in turning the
last one in a nice bonsai

Just times
I have successfully grow radiatas from cuttings a lot of times before.
After a week and they are still like this, I think they will survive.
Have fun
Do you like the smell of radiatas? I do
Best regards.