I know there are folks from lots of small ISPs here and I wanted to check-in on asking few advice points as I am involved building an ISP from green-field.

Usually, it's pretty straight forward to cover high-level important things, filters, routing policies, etc.but we all know the devil is in the details. 

I am putting together a public DOs and DONTs blog post and would love to hear from those who have built ISPs and have recommendations from Billing to Interconnection, Routing policy to Out of the band  & console setup, Software recommendations, etc. Bottom line is that I would like to publish a checklist with these recommendations which I hope will be useful for all. 

thanks in advance for your help and recommendation.

Mehmet