Hi Jace, the Flash hoody would be perfect, it's really nice piece of gear. A synthetic hoody would be perfect, though the only light ones I knwo of are the BPL Cocoon and the Patagonia Nano Puff. If you can sew or have someone to help you, a ThruHiker kit like the Kinnsman or Kennebec aren't that difficult and can save you alot of money.
As far as the bugnet, if you are starting mid/late June SOBO, you probably need it the whole way, you may be able to send it home in Va. depending on when you arrive and what the temps are like. At the beginning, you'll be dealing with some pretty intense insect pressure. Not just mosquitoes; the black flies are far worse IMO. I would carry a bug bivy or enclosed shelter, headnet, clothing to cover arms and legs that is insect-resistant, and lots of repellent.