Brake fluid flush, what do you do?

So I found a leaking rear wheel cylinder, my master seeped some time in the last 7 years into the interior ( probably after setting for 4 years in the garage at my dad's house) but is good now.

I have a fresh master and new rear wheel cylinders.

I want to flush the system before reaching the 3 parts.

I have done it the old fasion way, down, hold, open, close, up, repeat till clear fluid runs out (keeping the resivour full the whole time)

Thought about having it power blead at the local shop, ($80.00 ouch)

What do you all do?