Wow! Way to start big!
I'd argue with Streak on the need for a pinpointer, especially being new to the hobby. But also suggest you not take either machine out until you master pinpointing in an open-air environment.
This is the most valid use of air testing a piece of equipment. Learn to pinpoint, both the F75 and F5 are the best in pinpointing among their respective tiers of competitor's models. I use an F70 and it's awesome at pinpointing.
Use every available size coin, use them next to junk, alone and at slanted angles. But I'd still suggest the Pro Pointer as it's an excellent accessory, surprisingly more useful on shallow targets than on deeper ones.
Yep, what Sandman says on the digging tools. I use a lot of different digging tools dependent on the site I'm at but your basic very heavy duty trowel is essential. A good Gerber folding saw, if you're going into root country also.
Lastly remember a camera for the pics of the goodies you're about to uncover!