VRS FSI Stage 2 questions

Morning all new to the site as I've just purchased a 220 vrs will be picking up next week

Already planning for stage 1 remap with shark in next few weeks

So stage 2 questions as I've been reading through this forum and just looking for a few definitive answers so I have a plan in my head

Order to fit engine mods

Cold air intake (Is this really worth it as a lot of posts here just say stick to standard box at stage 2 level)

HPFP - Any complaints against autotech, any better suggestions?

Down pipe with sports cat - What is the best to fit onto the standard exhaust system? Should I really look at the full system instead? 

Stage 2 map

Should anything else be changed engine wise before stage 2 map is applied?

Thanks in advance for the info