Wanting to go turbo in my ek9

Hi guys,

This is a plan, in about 6 months time, to get everything together.
Ive got a GTK500 Turbo, Blackwerks Ram Mani, Tial 38mm wastegate, with oil lines and water lines with a hks filter.

My Engine is a b16b with 107k miles on the clock.
Ive got a hondatas300
Changed the pump to a walbro 255lph
Im looking for 300hp, and not to forge it just yet!

Just wondering what else is essential in my build.

Thanks

Gtk500 is quite a large turbo...

Yeh i know,i got the turbo, manifold, wastegate, lines and I have a dump valve aswell, I got for a great price so I had to have it Its all new pretty much.
I have a treadstone intercooler and pipework.