i don't have any physical ailments. the mj has definitely helped me through depression.
edibles sounds perfect for you, i personally don't know anything about a "paste", but you can easily make cannabutter or oil to use in a wide variety of recipes.
plus, in my experience, the brownies, cookies, cakes, etc...last for hours depending on the amount in the butter or oil.
as far as reputable sites...
sent you a pm