Flushing Complete Brake System ?

[PHOENIX]

Ok guys I have had this truck for awhile and mom my drove it before me. I do not ever remember the entire brake system being flushed (drained completely, then refilled). Everytime I have done the brakes I bleed the system. The fluid that comes out is always clean (well pretty damn clean atleast). And I run probly almost enough through the system, so that clean (new) fluid is being bled by the time Im done.

I plan to replace the rubber lines at each wheel. I would like to go with a great quality line, rubber or braid steel (I would prefer braided). What do you guys recommend for this, what brand, cost would help me decide too.

Im also going to replace the master cylinder.
I will bleed the mc the proper way.

While I have all these components off I would like to flush the lines very well. How should I go about doing this? I want to make sure I get the insides of these lines super clean. I want to get out any foreign objects that may have worked their way in there over the years. Any ideas, tips, or what to look for would be helpful. Would blowing compressed air through the system help or hurt it? I have a compressor and all the tools (air and hand) I should need (or can get access to).


Thanks in advance.