We can figure all sorts of great ways to spend your money!
A few "Christmas Present type items first:
I love the Fuji Techno-Stabile 14x40 stabilized binoculars which happen to be on sale at Defender via Active Captain.
I also have the FLIR hand held "First Mate" for no light vision.
I would say that some AIS receiver at least is very desirable.
Join Active Captain--
activecaptain.com.
Many of us use tablets--I pad is my choice, with various charts (Navionic and Garmin Blue Charts Mobile are my favorites). Wind, wave, tide apps area all good along with Weather. HD radar, avoids the expense of Garmin Sirus Radar, and good if you have cell phone service.
I keep a Plaino tackle box, with : assorted nuts, bolts, washers and screws. Fuses of all kinds (works for others as well as your boat). Extra electrical connectors, butt, ring, of sizes, adhesive shrink wrap. a hunk of #12 wire, wire ties, seizing wire, Nitrile disposable gloves, Snaps and lift the dot fasteners, along with simple anvil type of fittings to clinch them. Rescue Tape, electrical tape, almalgating tape, extra anchor shakles, Marine Tex,
JB weld, both Kwik and regular. Extra drain plug for the transom. Hose clamps, of sizes from sink and head fittings to fuel lines.
In the tool box: A digital volt meter, with good leads, and a couple of hanks of wire with alligator clips on both ends.
Another item to think about are waders--I occasionally use them if I have to get into cold water to launch the boat.
We carry 4 anchors. A Delta or Manson Supreme on the bow. We also have two 6 lb Guardians, which act as our Stern Anchors especially at Lake Powell Stern is right off the beach, and one anchor on each side up on the sand, or rocks. The 7 lb Fortress (mud position is available) to supplement the other anchors for sand or mud. We carry 3 sections of 8' 3/16" chain, for around rocks or for the extra anchors. Extra line--1/4" is fine for stern. I have several hundred extra feet. I also have an extra several hundred feet of 3/8" for main anchors. These are all under the foot well which is under the table.
Spare props, nuts, cotter pins and crown washers, extra thrust washer.
When in the PNW I also carry hundreds of feet of 1/4" polypropylene line-- for the crab and shrimp pots. But also can be doubled and used as a stern line to trees. I have an extra hank of 1/2" x 20 feet with eye splices on each end, to put around trees, so that chains or small line will not harm the tree.
In the tool box: hammer, strap wrench for filters, prop nut wrench, Vise Grips, Large, small, needle nose and chain. Water pump pliers, full metric and SAE socket and open end wrench. Also a Robertson Screwdriver (for the squire drive screws used on the boats windows).
You might consider an anchor windlass. Most use the Lewmar 700 H series.
Extra hand rails on the top of the boat:
These hand rails are bolted thru the lip on the boat top. They make getting aboard, out of the cockpit to the deck and going from side to foredeck railing much easier and safer.
Add to your cruising grounds: Great Lakes (on the way to the San Juans), and Lake Powell on your way home!
We have spent 7 summers in the PNW, with 5 trips to AK, (also a summer in the Baltic and North Sea) without a survival suit. Do get the dinghy. The West RU 3, which is 8 1/2 feet long, and is light enough for the top of the Pilot house. I would consider one of the Torqueedo electric outboard. We have a 3.5 Hp Merc two cycle and have owned a 2.5 Hp Suzuki for dinghy outboards. The Torqueedo is in the budget for the next dinghy motor.
Good luck and have fun with the new boat!