I want to be in a relationship where I have two girlfriends.
Why would you want more than one girlfriend?
I could spend time with them at the same time and save time and money
While this may seem like a good idea to you, there are a lot of reasons to not have more than one girlfriend and society as a whole looks down on those types of relationships. There will be a lot of jealousy in this type of relationship and you would probably have to deal with a lot more drama than you would with just one girlfriend, so maybe it is for the best that you don't pursue this idea.
Eh, I'm going to be successful no matter what.
Most people can only handle one girl also. I think that a normal relationship only has one man and one woman in it.