You can get it from here http://www.softpedia.com/get/Mobile-Phone-Tools/Others/Droid4X.shtml
You will also need to grab the Force Arena apk, you can't install it from the playstore in the emulator. I only recommend the same website, to be sure you get the official apk, not a hacked one http://mobile.softpedia.com/apk/star-wars-force-arena/
As for performance, for the game to run smoothly it is very important to go to Droid4X Settings -> Other settings and give it access to all 8 CPU cores and at least 2048 MB of RAM (I personally use 3072).
Good luck!
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I have 3 accounts and I use Facebook accounts to store my progress, I use my personal fb account for my main account and I used https://temp-mail.org/en/ to create the other 2. It's completely safe and every bit of progress is saved, I switch accounts all the time without any problems.