In HK my dealer quoted me 90,000 HKD for a 600mm. I have a feeling given enough time you can find one going for 86,000 HKD somewhere.
Get a lenscoat. My preference is black as there is a rebellion problem in the Philippines. You dont want them to think you're military. No more need for a hoodie the Series II Super Teles has a great lens cap.
Get a replacement lens foot from shops like RRS, Kirk, 4th Gen Design, Naturescapes, etc
Get a proper tripod head and tripod legs like those from 4th Gen Design half gimbal, Whimberly full gimbal and Gitzo Series 4