Planning top end rebuild on 200kw 5l au xr8 ute need suggestions

[Muzza661]

Hey guys top end of my motor needs rebuild mainly valve springs. But if top end coming off the motor I want to upgrade have budget of about 2k. I do want a larger cam I want more respone out of her but also want a rougher idle. Also may aswell replace valves aswell. Any company that does kits or any suggestions on what to get would be great