HPFP is actually covered till 120,000 miles if I'm not mistaken. Turbos are factory warranty so 4 year/50k miles unless your CPO or have an extended warranty.
For mods I'd suggest a tune and DCI as your first mods with a little E-85. If you buy a jb4 you'll have a code clearer built in so before you uninstall it for warranty work just clear all the shadow/fault codes and you'll be good to go. Your second mod should be DP's because you'll be able to run higher boost maps that way.