Get a big box to keep your swag in!
If you have a bit of metal detecting experience, as you seem to, it should be a relatively easy transition. Keep sensitivity lower to start until you get used to pinpointing and imaging. The better you get the more accurate it will be. Luckily the 2500 pinpoints dead on and is practically fool proof. The hardest items to pinpoint are items on or near the surface. Stick to the standard coil. I am not wild about the larger coil for the type of hunting I prefer but I am getting better with it. I would run in one of the discriminate modes to start and then move on to All Metal later. I prefer "Jewelry" and I usually have a custom program set up for trashy areas. Every once in a blue moon I run in "Coin" mode as a sort of inbetween. I started with "Treasure Talk" on when I bought mine and it's still on. It may kill my battery life but I really like it. Experiment around and you'll find settings you like. The menu navigation is real easy.
The only real downside to the 2500 is that it's heavy but my arm got used to it pretty quickly. If it is too heavy to start you can remove the battery pack and wear it on your belt and shorten the shaft a little. There are real experts on this forum who I rely on. Uncle Willy, John, Terry who have loads of 2500 experience. There are others but my mind ain't what it used to be.
It's a fun forum. I try to post pics of all my finds and nobody has ever told me they are sick of seeing my clad. I do get my share of gold and silver too! I like looking at finds form different parts of the country.
My two cents.
Chris