I currently have a MI424WR-GEN2 router that came with our FiOS. In a few days, my internet will go form 10/2 to 50/25. Will I need to have the new MI424WR GigE N router in order to enjoy my increase speed in my wired/wireless connection? Also, the router is still connected via coax, will I need to have that changed to ethernet (heard that makes connection faster)?