I'm planning on buying a 4k TV (specifically Sony XBR65X930D) and a Bolt Plus. I already have Charter Spectrum cable (Pasadena, CA) through a TiVo Premiere XL, which the Bolt Plus will replace. Can you please tell me what would be my requirements to make sure I'm viewing in 4k? 1) What would a good MB bandwidth flow? 2) I'm assuming I would need 4k HDMI cables, but there are so many to choose from. How do I decide? 3) I already have wired ethernet through the Premiere. Would splitting the cord and adding it to the 4k TV be advantageous at all? 5) Bolt Plus claims that I would no longer need a cable box. If I'm having trouble with picture quality, missing channels or bandwidth problems, should I contact TiVo or Charter first? 6) Anything else? Thanks so much!