My brother actually has your Bone & Joint Formula, as well as a bunch of silica. Would a 1.5 tsp of Super Ginkgo Green, 1.5 tsp of Bone & Joint, and 1 tsp of silica per day be enough or should I get more licorice and yucca root?
That should be enough. Much more and there would likely be a laxative effect.
Are X-Rays generally performed for diagnosing rheumatoid arthritis, or is blood work good enough?
Blood work is best. The X-rays can only look for joint damage.