If I were you I would buy a FRPP King Cobra clutch kit, as it comes with a new TOB, and replace the entire clutch. For the work involved in getting to the TOB it is definitely worth it, whether you are doing it yourself or paying someone else. You can find a King Cobra kit for around $169.00 shipped.
Sacond the throw out bearing...you could try spraying some lithium grease to see if it quiets down. If not then it is too far gone.
I paid 250 labor to have my tranny removed and replaced. Clutch will run about 200. Anywhere from 500-750 is is good to moderate price. And yes...Id have the clutch replaced if I were pulling the tranny.
I pulled my tranny under my carport to swap the clutch but I wouldn't recomend it unless you have a lift. I'll never pull a tranny with the bell housing combo from my back ever again.