Style chooser

To all the sifu's,
I have a 4g93 GTI engine (MMC Ecu). Currently the engine is 100% stock.
I'm planning to perform a few engine moddifications. I need alil advice on the modifications that I'm about to perform.

My idea is;
1) Change the trottlebody to enlarged Mikuni 4g63 Perdana trottlebody.
2) Change the intake manifold to MIVEC intake. (Which is better MIVEC or GSR?)
3) Port match the trottlebody to the intake manifold to the engine head.
4) Full engine job (Port & Polish...