I plan on having two valentines.
Where are you going to take these two valentines dates?
I'm going to have them both on valentine's day
Only if it's okay with the both of them can you have an open relationship. It's inconsiderate, rude, and hurtful to have someone else competing for your affection over you. You need to choose and stick to one person only.
What if they let me have them both
Even if they would agree, I doubt either of them would be very happy that you're not being very serious. How could you possibly care about two people if you're taking them both out on different dates during Valentines?