Take the battery to an auto parts dealer, after fully charging it, and have it 100 amp load tested. Sitting that long, it could have a weak cell or 2, show 12V, and still give you problems. Tires that old need replaced, have gotten hard, not much grip, regardless of tread left. ALL fluids need changing every 2-3 years: clutch, brake fluid, final oil, fork oil. These are all hygroscopic, drawing moisture which turns to crud. While changing tires, with the rear off, give the final splines a light coating of MOLY paste. Small tube lasts many years. You might not find MOLY 60 anymore, but I believe Loctite has a MOLY 77 good substitute. DO NOT use a Moly GREASE, once hot, it slings it all over the place. Once all your maintenance updates have been addressed, you can ride with confidence, and THEN we can help you to spend your $$ on upgrades and modifications to make her "just yours".
2003 1800C Black w/ H-K 3", PC III, Hondaline w/s & backrest, XM sat. radio, MB 12" shocks, Progressive fr. spgs., Wolo, SPyKER mod, Glen's gas cap, Paladins, Drag Specialties Popsicle pegs, K-N, blackened engine, Kury RTB, mirrors & r. boards, blue LED's, Rivco tach & risers, LeatherLyke bags, backrest bag, w/s tri-pouch, desmog, pr. valve mod, grd. fix, Gen. Altimax RT43, Mich. Cmdr. II, Ult. Lowrider, Showchrome grips.