Reddit mentions of Welding Sleeves, Leather, Golden Brown, 18", Elastic Cuff, Heat Resistant

You do not need pants. I just use jeans, and the the apron over a jacket. Here is what I use:

Get one of these for sure.
http://www.amazon.com/3M-Face-piece-Reusable-Respirator-Assembly/dp/B000FTEDMM/ref=pd_bxgy_hi_img_y
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http://www.amazon.com/gp/product/B00328IAO0/ref=oh_details_o03_s02_i00?ie=UTF8&psc=1

Gloves - I bought a few pairs. You will use them up at first, till you learn what not to hold on to :) http://www.amazon.com/gp/product/B000MRQAJG/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

Jacket has some options. Sleeves and an apron:
http://www.amazon.com/gp/product/B002AKIRIA/ref=oh_details_o06_s00_i01?ie=UTF8&psc=1
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http://www.amazon.com/Welding-Sleeves-Leather-Elastic-Resistant/dp/B002GI9A3C/ref=pd_sim_hi_48

or a plain jacket, but look around. This price on amazon seems high. You might be able to find something like this locally for less.
http://www.amazon.com/Hobart-770488-Leather-Welding-Jacket/dp/B002VECL3W/ref=pd_sim_hi_42

And I use this :http://www.amazon.com/Miller-Genuine-Leather-Indura-Welding/dp/B003IL2RCM/ref=sr_1_10?s=hi&ie=UTF8&qid=1382001569&sr=1-10&keywords=miller+jacket