if you must buy the r11e-lte or r11e-lte6 then cheaper and works better is EP06-e, my last howto is here: http://forum.mikrotik.com/t/quectel-ep06-e-and-wap-r-ac-rbwapgr-5hacd2hnd/131724/10
Or just wait to next generation of modules base at eg12/eg16 … and we don’t have idea when it’s be