In which forum thread do I post my Pro-tools based question?

[sleeplessoasis]

Hi All,
Just wondering where exactly I should post my question as it covers multiple topics and crosses hardware and software. Don't want to post in the wrong thread and annoy people unintentionally, and waste the post itself obviously!
Post / questions...

I have a 2010 iMac (Yosemite 10.9.5, 3.06 core 2 duo, 8GB Ram), a Digidesign 003 Factory, and running Pro-tools LE 8 (8.0.4) with one 3rd party plugin (EZ Drummer).
I'm aware that this setup is getting a little long in the tooth and, although it's still running perfectly fine, I would like some advice on the best / most cost-effective upgrade options available to me. I'm not looking to expand the setup any further, I'm just aware that if I go higher than Yosemite it's highly likely Pro-tools wont work properly anymore, from what I've read anyway!

Initial questions are;
Can I just upgrade straight to Pro-tools 12 and run it on the iMac and use the 003 with it?
If yes, can I also then open PT LE8 sessions on the new PT12?


Thanks in advance for any helpful replies.
Cheers,
Phil