The correct option is: using numbers to help readers see the various steps easier.
It is good to provide additional information when you are giving instructions, but in order to make those instructions clear and easy to follow, you should use numbers to organize the ideas to help readers find the steps in an easy and concrete way.
He wrote it to inform I believe.
I believe you are right, because Romeo seems to be foreshadowing some fearful consequences awaiting someone soon.
