Hi there @nzbee… welcome from a fellow kiwi 
Sounds like you are in a similar place to me as far as diagnosis is concerned (inflammatory arthritis, most likely PsA). I always feel sorry to hear of anyone else who finds themselves in this, or a similar, position, but am pleased you found this forum. The people here are all awesome!! And have given me a wealth of information and support, as they will for you!!
As for going through the pharmac protocols before you can get on the biologic meds here. I think I’ve got a pretty good understanding… the same as most places… fail 2 DMARDS (or be unable to take them), I’m not 100% sure of it but think maybe having to be on prednisone for 3 months (with a DMARD) and unsatisfactory benefit comes into to it to.
Anyways, the sulfasalazine is DMARD number 1 for you… Methotrexate (Mtx) might prove to be DMARD number 2.
I’ve been on Mtx for over a year now (started out on 10mgs and the dose was slowly increased to 20mg)… Initially I think it was a little helpful for the fatigue and has definitely made a difference to the minor psoriasis issues I had, but it doesn’t seem to do much for the arthritis… I keep taking it though mainly because my understanding is the Mtx can be helpful in preventing developing anti-bodies to a biologic. We have just added Leflunomide to the mix as a trial (I think if the Leflunomide doesn’t work, that’ll be my 2 DMARDS so then maybe we get a look at biologic, not sure if I’d need to do the 3 months of prednisone or not).
As for NSAIDS… I found ibuprofen about as helpful as sucking a lolly would be (perhaps even less so)
But, I have found Tilcotil (AKA Tenoxicam) does reduce pain levels by probably 25-50%… and boy does my body soon let me know if I’ve missed even one 
Just a note regarding Mtx… I had read some horror stories, and all of the possible side effects too, and was a little nervous of taking it, until I read somewhere on this forum that we need to remember the dose amount we take for PsA and the like is miniscule (usually up to about 20 - 25 mgs per week) when compared to the dose used for chemotherapy (perhaps a few hundred mgs in a dose)… when I first started on the Mtx I had a few issues with having a Mtx “hangover” for a day or so after taking it, and getting a few ulcers in my mouth (sometimes quite painful ones)… but by dropping back the dose and then slowly increasing it back up, taking it late at night, increasing the folic acid to 5mg 6 days a week, and drinking heaps of water with it and during the next day I can now say I’m having no noticeable SE’s at all from it.
Please don’t be afraid of trying the Mtx, unless you have a good reason to be. It can do a lot of good for some… although I’d say the benefits I have from are minimal, perhaps it is helping to keep the PsA from going completely rampant too… the only way to be sure of that would be to stop taking it, and at this point I’m not prepared to take that risk.
As for the prednisone, yes, it sure can have some nasty effects and doctors are getting a bit toey about prescribing it… but… in a low dose for a short time (like maybe a few months) I don’t think it’s soo bad, as long as you can tolerate, and don’t suddenly stop it, it’s one of those things that you need to wean down from. I have found being on prednisone was the only time my ankles have not had pain in nearly 2 years… unfortunately, a long term dose at the strength needed for me to get that level of response is not an option (I was actually give the prednisone for asthma, not for the arthritis, and I found for the first time in years I was actually able to function at what I would think should be a normal level for me).
I completely agree with you about quality of life now being far more important that length of life… I’d rather take my chances with the meds that might prevent me from needing to be in a care facility for many years, later on, due to being unable to care for myself because of badly mangled hands, feet, etc etc etc. I never thought I’d ever say something like that, and have never felt comfortable taking meds for anything, before this hit…
You are doing the right thing by learning as much as you can about options for you. You mention a rheumy appt. soon, ask your rheumy about where to from here.
Do keep us informed of how it all goes for you… it may be a long road ahead, but there is always a chance of finding the right med for you fairly quickly too… will keep my fingers crossed for you on that score 