mcopete's list was very good, but I have a few minor suggestions you can do with them what you will:
If you're not looking for a HD input/output from the FPV display, you can save some money going with the Boscam RX-LCD5802 instead of the Black Pearl. don't forget NEITHER display comes with a wall charger, so you'll either need to adapt the plug that comes with it and patch in a power supply, or buy a power supply separately.
Those antennas he mentioned are fine, but if you're interested in splurging on premium antennas there's a 3-antenna $110 kit from FPVLR which is pretty much the ultimate... comes with a pinwheel for the transmitter, and 2 receiver antennas: a pinwheel (omnidirectional) and a helix (long range directional). Here's the link
http://fpvlr.com/shop/index.php?route=p ... duct_id=97
if indeed you go with these you want the sma-male option (for the transmit antenna) and you'll want to contact the sales email after you place your order and confirm your receiver (the BP or Boscam) so he makes sure to get you the right plugs.
If you're going to fly over water, look into a Getterback a bunch of us have them.
You'll probably want a lanyard because the RC + display can get heavy
make sure you do an internal mount of the iOSD Mini. You'll have to move the can-bus cable from the leg up into the body of the Phantom but it's super easy and makes your install much cleaner.
There are tons of discussions in this forum (FPV) about the above process, mounting the transmitter, etc