Double Dark Side! Diesel & 8P
Mine is in at RTech as we speak having a custom map to 550cc injectors with all your mods above including a large port head and WMI but I'm running a stock K04 turbo. I'm hoping that will crack 300bhp. There is a lot of mapping info out there for 550cc injectors so they seem to be quite popular.
You can run standard injectors with a 4 bar FPR and it'll be ok for over 300 but you'll be running them to the max which can make for a lean map at the top end. Mine are running at 96% capacity like this at the moment at under 300bhp.
As for rods, everyone you speak to on here will recommend them on anything over a stage 2 map. Some people even suggest running them for a stage 2. You have to remind yourself of the age of these cars and that rods have also been known to bend on stage 1 maps.