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If the head is stock, you can use the small peanut cams (like S3, or any 256 grind off the shelf with stock lift) with great success and solid idle character.
If you want a lope (pointless waste of fuel with that turbo, but fun to listen) you need a bigger grind and upgraded valve springs.
Personally, I favor the OEM valve spring (for longevity and reduced wear) with an S3 cam, for stock idle and good performance. I would NOT run rocker stoppers. Keep the fuel-cut rev limiter set to 6600~ for best reliability.
On the other extreme side of things, the bigger cam, the upgraded spring, the higher RPM limit, the reduced fuel economy side of things, I might suggest an HKS 264 grind with a good spring like comp cams (or a matching set of HKS springs perhaps), still without rocker stoppers, and then the RPM limitation depends on where that turbo will run out of compressor. Honestly thats a tiny turbo to be using on a non-daily driver, and your larger exhaust area-radius is working against you in some ways with that tiny T25 hole. It would be a bit mis-matched using these items with that turbo is what I am trying to say, but your post indicates that this is the kind of vehicle you want it to be. The only reason I do not suggest going larger on the turbo is because you have an OEM piston, and the OEM piston limit for reliable engines is right around 370bhp, give or take, which is what that turbo will provide easily.
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