How long is a piece of string?

There is no one "best" way. It's all preference.
And by build, I assume you mean tune.

Is it for street/track/drift/grip?
What kind of power do you want to make?
Do you want to spend $200 or $20,000?

Looks like you already want to supercharge and lightweight flywheel with a ported head.
Supercharge - bigport head.