As with most problems and troubleshooting, I believe the first step is getting more background information:
- Are you actually going to to track or running mountains/backroads (this matters for average speed and the type of driving being done [continuous braking on a downhill, for example])
- Are you really going through pads every 2 months?
- If you are, are you checking your disc thickness as well as looking for stress cracks?
In short, I would think if you are heating up the system that much, you would be seeing cracking. Also, if you are getting the pads and disc that hot, I would assume you are going to see some bearing failure soon.
I just don't know, as I don't see enough detailed and specific data about what you are seeing.
IF you are going through pads THAT fast, I would state you need to look at cooling to the hub before you do anything else. A more metallic pad without cooling is just going to make everything hotter.
If your pedal is going to the floor or getting long, you are boiling the fluid as the complete system is getting too hot.
Reference:
http://www.ft86club.com/forums/showthread.php?t=34449
As for fluid recommendations or a procedure for what you are doing -- I am going back to needing more information about the totality of what this car is used for, and the percentages it is used in.
For example, I am not going to suggest Motul 300v Ester-based engine oil for someone who just DDs.
From reading this post and your previous link, I am getting the idea that you just don't have a lot of experience in this area yet? If that is the case, there is no "better" or "the best", there is what works for the application. Do you want to pay 10x more for fluid and need to change it every few months? Do you live in a humid environment? Do you really want to run metallic pads that are actually WORSE on the DD as they are not at operating temperature?
I think you need to take the time to share a detailed, specific and well-worded background with all of us.
Use a keyboard on a real computer. Take your time.
We will all be happy to help!