Evening there Wal .. The 14x9 Blitz is a great coil .. I've got number 28 off the production line.
Ben, don't discount the I1 inch mono that came in the box mate .. A very, very good coil around .. Just a tip, leave her in 'Fine Gold' and stick with factory settings until you get a bit more comfortable with the machine.. Run You GB in tracking, and remember to hit the green button and give her a pump or four regularly .. Set the threshold at 12:30 to 1 o'clock and maybe wind your gain up to 12 - 14 ... Low and slow, Ben, low and slow.
Check out the Treasure Talk section in 'Community on the Minelab Website for some excellent info about the 5000.
Good luck mate and let us know how you go.