VVC engine rebuild- what else?

I've got a nasty clatter on the TF160 so it's coming apart.



I'm new to this engine so I'd like to tap into forum knowledge to make sure I get the best out of it and don't overlook anything that would give me benefits in reliability or performance while I'm at it. Not looking to spend buckets of money though.



Currently it's stock but decatted with a filter and fresh air intake.



The plan so far:

Fix what's wrong

Multi layer head gasket/stronger bolts/new style oil rail

PRT thermostat conversion

Port match intake and head, flow seats

Clean up coolant channels in head



What else should I do while I'm at it?

Specifically, I have read that the 135 exhaust cam has the same duration but 0.3mm more lift than the VVC cam. Has anyone tried using this and does it help? If yes, do you need to retime it or do you just drop it in on the stock gears? I know verniers will help but out of the budget right now.

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