[Q] New Note 3 owner from Nexus 5 - have questions (Greenify, Xposed, etc.) topic

I have the Nexus devices (5 and 7) and it was a breeze to to configure the phone (rooting, etc.) and easier because there is only one version of the phone. Now I have the T-Mobile Note 3, I tried to read as much as I can but there are so many questions due to the many variables on the phone (carrier version, locked bootloader, etc.) So I thought I will ask those I couldn't find the answers.

My phone is rooted using Kingosoft, KNOX is not tripped and on stock ROM with T-Mobile SIM card.

Q1. Text-to-speech
How do I change the this to use Google's instead of Samsung S-Voice? When I got to Settings, only S-Voice is selectable. I want to change it for navigation purposes

Q2. Home button - double click
Any change to configure this for something else, like Google Search? I've frozen S-Voice so double-clicking the button now does..nothing.

Q3. Disable My Magazine swipe-up
Quite often I accidentally swiped-up. Any way to disable this?

Q4. WTH is Beaming Service for Beep'nGo??
Went to Google Play --> My Apps and there is a new update for Beep'nGo. I did not install this, but I found out I cannot disable this - I could not find it under Titanium or Application Manager. How do I disable this? I am sure it's running in the background and eating battery of some sort

Q5. What is safe to Greenify?
From Nexus 5, there are just a few built-in apps in Greenify. But with the Note 3, there are tons of them, not including the apps I installed. Which one of these I can disable? See screenshot below.