Looking to start my turbo build

Alright Guys, I'm getting super excited just thinking about this...... :blob:
So, im looking to do a Moderate turbo slant build on my 68. I am looking at a full custom turbo manifold, a GT67 turbo, intercooler, a moderate cam, Aussiespeed intake, bigger valves, re ring and balance the bottom end, some form of tunable electronic ignition, and a t5 out the back side to jam some gears. I'm looking to do a fun street car and maybe some track time. Kinda have a Pro touring vibe. haha. :prayer:

And..... there are some questions to go along with this. :burnout:

How Big of Valves can i run?
Whats the limits on Slant cams?
Where do i find boost friendly head gaskets?
What ring gap are the turbo cars running?
What can i spin the engine to and make good power?
Any suggestions on the T5 swap from an Auto?​