2006 Highlander Headrest Wiring Install

I just got my headrest monitors from Vizualogic and I want to hook them up this weekend. I need to get 12V power to the Headrest Monitors, FM Modulator and DVD player. My question, the Highlander has a power plug at the base of the floor, can I slice that cord and take power for the Monitors and FM Modulator? Then, have the DVD player plugged into it (like a regular cell phone charger). So, basically I would have three things hooked up to that 12V power supply. Would that work or blow the fuse? Is there something easier and neat I can do?

Thanks in advance!