Honestly, even though it's a Buell and "rare" any decent motorcycle shop (not dealer) should be able to fix whatevers wrong. I'd suggest taking time to find an independent shop you like. Is there any way to contact the PO?
Have you looked into the charging system? If it's charging, you're probably OK and don't need to worry. But in 2009 some had a problem. You should look it up, but the cliff notes are that it would overheat and not work.
Check under the seat in the Stator harness (3 yellow wires) to see if theres an adaptor harness plugged in to delete one leg of the stator ("Harley fix", I'd remove it and fix the system correctly)
Check to see if the stators rotor has a oiling hole drilled in it (Ricks stator)
Upgrade the Stator with higher temp windings (you can buy or DIY)
Steering head bearings at that mileage aren't a worry to me
Yes, get a belt because of the damage and get an extra to keep in the garage. You'll probably never need it but you're really far away...
PR5's are a GREAT tire and will last
Clutch cable is a good replacement
ASV and CRC are good brands you'll be safe getting. Lots of Chinese stuff out there and be careful, some of those had the wrong application listed and will bolt-on but hold the front brake on slightly and can even lock up and not release! Make SURE to see the lever is NOT pressing on the master cylinder piston when installing.
EBC 245HH pads are great for the street. HONE the rotor and re-bed the pads.
Because when they go theres NO warning, I replace wheel bearings with every tire change and keep a set on the bike (but I'm cray-cray). 6005-2RS front and 6006-2RS rear. You'll have good luck with OE.
These bikes are surprisingly easy on clutches. I wouldn't have guessed that at that torque level but ??
The only way to know is to take it apart, but steels and frictions should be easy to source.
Other than the charging system, these are good on electrical parts but no motorcycle likes corrosion. Toss an extra relay and fuses under the seat JIC.
You'll probably never need a rear rotor but fronts are still easy to get, and available aftermarket from a lot of brands. PM LunaticFringe, he has a good brand he sells fairly to members
Keep in mind to check the oil chart. Use the correct weight oil for the lowest temp you'll ride in. Most people throw in 20w-50 without knowing that. If it gets real hot where you are, step up. My CR loved straight 60w doing track days in 100*+.
Flush the brake fluid every year. You mentioned it's humid where you are and brake fluid is hydroscopic.
RIDE it! Don't ever start it unless you're going to ride it, and ride it a lot