FE EXPERTS! Need help with 427SO

[TerrysSPF]

Looking for help / advice on what to do with a 427SO. I have an oil leak in the rear of the engine, pass. side, that looks to be coming from where the head and the manifold meet. It's spraying, so it's hard to tell exactly where it's coming from even with a mirror. Hoping just a head, or intake gasket. I hear this spot is prone to leaks.
Anyway, I'm thinking that if the manifold has to be removed, I may install one of those tall breathers on the rear of the manifold, and then going with dual pcv's on the valve covers. I hear this is the hot set up on FE's lately. Currently, the engine has 1 pcv on the pass. side valve cvr., and 1 breather on the drivers side.
Anyone out there with this set up? Any PRO's / CON's to running it this way?? If the leak turns out to be a head or valve cover gasket, and the manifold doesn't have to be removed, would you consider doing it anyway and installing the tall breather? Is it THAT beneficial??
Anyone recommend any OTHER type of set up?? Since I'm fixing the leak, I figure now's the time to make any changes!
I appreciate any help / suggestions you FE guys may have!!! Thanks in advance!