Dreadlocking with a perm
Dreading Methods
It can be done, and for exhibit 'A' I have a timeline of one up to 13 months:
http://dreadlocktruth.com/dtforum/30/5778
However, if I'm not mistaken the guy in question (who's timeline I just posted) had a fair amount of problems with breakage, and it took a good 9 months or so to see any real progress (my personal opinion). After having had a perm before, I can see the benefit to a light perm (or at least what the benefit should be) but I think the risk is just too much. A few minutes too long and half of your hair ( if not more, I'm speaking from personal experience) could all just break off and fall out. My last perm left me looking like a poorly groomed poodle, and if you were to touch my hair, you would see that the 'volume' was just from the massive curls... in reality over half of my hair was so badly fried that it broke off. It felt like I was wearing a really bad wig on top of a buzz cut (if that makes any sense). Instead, if you're looking for a good bit of framework early on, I'd recommend twist and rip.... then again, I'm moderately biased.