I would you like to start trading options on futures as a secondary source of income. I'm not looking to making millions of dollars overnight but pickup a few bucks here and there from writing credit spreads. I've been researching and paper trading so I think I have a good understanding of how to approach succesful trading. My question is is $5k enough to get started? I'd probably put on 1-2 spreads in a given month and let those expire or buy back before looking for new opportunities. Margin requirements are my biggest worry, assuming good money management.