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.