Hydraulic Handbrake & Internal Brake Lines Advice

Hi all,

One too many close calls with brake and fuel lines under the car have persuaded me I need to move them internal and whilst I'm at it, fit a hydraulic handbrake and bias adjuster.

Still on rear drums which seem to do the job for normal braking but the handbrake is poor.

What have people done with the twin lines for the rear? Tee'd them together?

Any other tips to make it a neat job? I plan on using 3/16" copper brake pipe and AN-6 non permeable hose with a stainless overbraid.