Sundown Farms is in Hardiness Zone 9
14 Companion Plants That Should Always Be Planted Next to Each Other
Which Vegetables Grow Well Together including those to not plant together. Great list in table form.
Copper for fungus control – http://www.waldeneffect.org/blog/Fighting_tomato_blight_with_pennies__63__/
Chart – Seeds per ounce and per 100′ of row.