Yeah Defo keep the plugs in there.
Perhaps change the oil every 11months or something? Depends on where it gets driven.
Mine is purely trackdays and turbocharged so I'm harsh on oil.
Where I only do track mileage and very limited road mileage I'll be lucky to do 1k on an oil change lol
It's fine to be cautious though if you can afford to change it in half the mileage then why not?