If your main viewing area is in the living room then that's where your HTPC should be located as well. I don't understand why you would place it in a remote part of the house when it should be an integral part of your home theater setup.
You haven't indicated what you will be viewing or controlling on the HTPC from the living room so we can't offer much help without knowing that. What OS version are you using and what apps do you use for video playback? Are you using WMC or any other DVR apps? Do you use the HTPC for gaming? Do you use it to watch 4k content? Do you use it for watching or recording live TV from cable or an antenna? If so, are there any DRM channels that you watch and/or record?
You haven't indicated what you will be viewing or controlling on the HTPC from the living room so we can't offer much help without knowing that. What OS version are you using and what apps do you use for video playback? Are you using WMC or any other DVR apps? Do you use the HTPC for gaming? Do you use it to watch 4k content? Do you use it for watching or recording live TV from cable or an antenna? If so, are there any DRM channels that you watch and/or record?