Lots of good stuff there Old Akro; re Anti-TNF, when it was first introduced here in UK I believe it cost £9,000 per annum for treatment, so not every Primary Care Trust would allow the treatment - and you had to have already been on a course of disease modifying drugs such as Methotrexate.
As I like a drink or two I turned down the latter, finding that the benefits of alcohol out-weighed the thought of weekly liver function tests. Incidentally my eldest son was prescribed Methotrexate to help with his psoriasis (another HLA B27 link), and found it caused severe depression - not a good thing for a test pilot to have!
King 8888; if you are not in a good scheme already, find an outfit that offers a good Loss of Licence Compensation Scheme so that should the worst happen 20 years or so 'down the road' you get a decent pension.