Well the risk is limited to the price of the call so it can be easily adjusted. Say you buy a 22 MAY 10000 Call, it costs $150 right now. that is your total risk, your reward is then up to you, I am looking at 12k so my reward is $2000.

Although if the market doesn't go up that quick it could be less.

Then you would get different R:R for different calls

Have a look at Deribit, here is a affiliate link, you will get a 10% discount on fees and I get a reward.

Any other questions, I'll do my best to answer. oh and thanks for the voice compliment