help mods

Hello I’ve been reading up on what to do to upgrade my 09 gti. I have come up with a list on what I want to do I don’t know what brand is best. I have a 09 gti with a 2.0t with a fsi engine the mods I came up with are below any suggestions would help. I also have a $3,000 limit as of right now...

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Alright i just got my 2002 gti about a month ago, when i got hold of it it already had some mods done to it but it still cant keep up with my dads g35, any suggestions on how to make it faster without getting too crazy would be appreciated. It has a 3" down pipe/ full 3" exhaust, cold air...