Yup, there's a lot of conflicting information on diet and supplements. I think it's great to do research and be informed -- and it's also possible that not everything triggers the same response in everybody. That said, I commend your discipline! I think that cutting out dairy is a difficult thing for most people -- and I am one of them! Lately I have come across 2 people (my acupuncturist making it 3) who believe that dairy is not good for your body but they've all referred to the problem as that dairy products here in the U.S. are processed but if they're raw it's okay. That statement might be for "normal" people but even my acupuncturist thinks that raw dairy would be okay for me. I'm not sure I agree with that for other reasons but regardless, it's hard (in some cases impossible) to find here and if you can, it's very expensive.
I do believe it would best for me to be on a dairy and gluten free diet but at least I'm more conscious and am trying to be better about limiting my intake. I know I shouldn't even eat "real" whole grain products if they have gluten but it's at least "better" than "bad" if you know what I mean. Sugar is a little less of a problem for me. I don't consume refined sugar often but my downfall is white flour prouducts like pasta and pizza! In general, refined & processed foods are not a huge problem for me but sometimes it's impossible to avoid if I'm not at home. Also try to eat organic whenever possible -- that can also get very expensive and make you crazy but I do the best I can.
Supplement-wise I am taking: Fish oil, Evening Primrose oil, Blue Green Algae, CO-Q10, D3, Flax Seed oil, Curcumin/"Turmeric Force", Lutein/Bilberry (for my Optic Neuritis). Those are things that have been specifically recommended for MS (although I took some of these before and would anyway). I also take a multi-vitamin, Calcium w/D, E, C and a vitamin B complex to modulate Homocysteine levels. I'm still evaluating, re-evaluating and researching. I'm in a little bit of a time crunch right now but I'll post more later about some things I've found and perhaps others will chime in. Oh -- and I hear you on the smokes! We know it's not good for so many other reasons and lots of stuff has definitely come up on this for MS as well. I'm doing better in this department but so far not as well as you!