You've got everything covered quite well...and I salute you...I just sent you a PM regarding using a 2.2 tip for your Finishline...for primer.
When purchasing a hose...quality is quite important...nothing will get you P.O.ed more than if that hose is hard rubber, doesn't untwist easily, or if someone drives over it, the inside disintegrates....so buy quality when looking at hoses.
Respirators, again...3M makes several good ones...but shop around.
And I see you have the 3M #15 adapter covered as well...I would get 2, 1 for each gun...but I'm sure you have that covered as well...LOL
You're now in the paint business...or awfully close to it...if you need help with anything...let me know.