downgrade to PT 10 and OS X 10.8.5

[Boutiki]

Greetings all,
Because of a myriad of issues, I need to downgrade both my workstation and my PT software, in order to get a slew of work done in the next month. I am in a time crunch but I'm hoping I can get some advice on the following configuration. I've researched all morning, and it looks like this config is compatible and *should* allow me to use all my RTAS plugins and run PT smoothly. Can anyone confirm this? Thanks SO MUCH, -BF

Workstation: Mac Pro 2.8 GHz dual quad-core, w/ 8 GB mem
PT version: 10.3.9
OS X version 10.8.5
Interface: M-Audio Fast Track Ultra 8R (usb)

*****ignore my signature below, which has my old recording config

[Manu101]

I see no problem with this.