just wanted to get my 1st post out of the way.

Got a metallic blue hard top with black accents

would really like to know what are the first after market parts i should get though...

 

Congratulations!
While I haven't modded, based on other's comments the top three early mods would be:
Cold air intake
Blow off/ Diverter Valve
Torque Arm Insert

I am sure others will give a better insight about their experience with different brands or other mods.

Happy Motoring!

P.S. You should post some pics