The factory bleed nipple setup is rubbish in my opinion. Difficult to use as you cant easily clip a bleeder hose onto it to stop air going back into the system.
A remote bleeder setup makes life easier.
If the system is brand new you may also need to bench bleed the MC to get any air out of it.
I used 7/8" Wilwood MC.
Wilwood High-Performance Disc Brakes - MasterCylinder No: 260-3376
One of the things I like about them is there is a bleed nipple on the MC that makes it easier to get air out of the system since the bleed nipple is at the highest point in the whole setup.
A #4 line is also a must since the #3 line will not flow enough to let the clutch engage quickly enough and clutch slip will result.
My system proved to be dead easy to bleed once setup