Level 35 is required to learn the final rank (226-300) in main production professions. Arcanite Transmute and Mooncloth have a cool down, so you can level characters to 35, level tailoring and alchemy to 300, then just log into those characters on CD to make the item. From what I recall on my server, making 2k per 4 days would have required something like 20+ characters, although his server may have been different and Classic prices will be different than they were in vanilla (but most likely closer to what private server prices are).