All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and messenger.
Firstly, we supplicate Allaah The Almighty to reward you for your efforts in Da'wah, reformation and spreading goodness. We hope you will enjoy the prophetic glad tidings regarding those who teach people their religion and call to Allaah. Please see Fataawa 83104 and 83103.
It is not necessary to have a scholar present in all your Da'wah efforts. However, you must not make a decision about anything contingent on an Islamic ruling, except after you find out the ruling by asking scholars.
As for the brothers who suggested that enjoining the good and forbidding the evil should be abandoned based on the verse mentioned in question; this brother has misunderstood this verse and is using it in a wrong context. The part (which means): {will not harm you when you have been guided} implies enjoining the good and forbidding the evil as it is an essential sign of guidance. Therefore, if a Muslim does this he will not be harmed by those who have gone astray. Please see Fataawa 92253and 85108.
Allaah Knows best.