Yes. Getting off the BZDs is worlds harder than getting off opiates, and 8-10mg of clonazepam is a stratospheric dose. You should feel relatively okay a week or so after your last dose of oxy, although there can be trouble lurking in your future as regards PAWs, but take that as it comes... I personally would recommend doing a fast (~1wk) buprenorphine taper, with a relatively mild habit of relatively short duration such as yours, it could potentially be pretty painless. The benzos, however, will be another animal altogether. That high a dose could potentially take months to taper down from, and I would not suggest rushing things; in fact, I'd suggest seeking out medical assistance. Benzo.org.uk has a lot of good info. Good luck & keep in mind tha it does get better and thar this community is here for you and has your back, no doubt... Stay strong, my friend.