First of all you already assumed that there is a safe way to bot. If you bot, you have broken the ToS of Blizzard, and if caught have given them sufficient reason to suspend/reset/ban your diablo account. There is no such thing as a safe way to do anything that involves 3rd party automation, you have asked if there is a safe way to bot, which means you are worried about your account, which means I would recommend to simply just not do it at all.
To answer your question more directly, the beta is working fine for me, and is doing what I want it to do, however the risk remains the same, be it the official release or the beta version.