I Want to upgrade my standard Rs turbo series 2 (bigger intercooler, clutch kit, chip, gearbox, and 1 bar of pressure)

But, I'm not sure which intercooler i should get?? I've been looking at airtechs frontmounted singlepass?

And what clutch should i get? Will an upgraded organic clutch do, or will i be needing a paddle clutch?

And.. What power can i expect?

Cheers and Thank you!