Wait just there. If you think quantum entanglement enables faster-than-light communication (and therefore, time travel), then you don't understand how quantum entanglement actually works.
Yes, quantum particles are entangled in such a way that if we measure the spin on one particle, the spin on the other will automatically be its reverse, and this happens no matter how apart they are. However, we have no way to control which spin the particles will have. They are chosen at random the moment they are measured. So, no, there's no way to send information using quantum entanglement, at least with the current knowledge we have.
This video explains it very well.