Bailey brake question
 

So I'm laid up in bed from hernia surgery and wanting to order some parts.. one thing I wanna get is braided brake line instead of ugly hard lines.. I have a 2010 bailey upright and wanna run braided from lf to the master cylinder.. what size line do u guys run #3 or #4 I see r popular also can someone give me a measurement from where master cylinder is to where it follows bottom rail to the lf upper rail where fitting is for lf brake hook up? Thx for any help.. just wanna order lines and some other parts so when I'm healed it's gun hoe time..