I hear you - remember average is for all companies- ones that are growing at 160% PA with others that are losing clients and have a negative PE. I prefer to forecast conservatively- less chance of budget blowouts. I used 30 as a very conservative P/E,
Although I am going light on my calculations, I did do some calculations which had 60- 80 euro (90 -120 aud) per share, with achievable revenue projections, and a higher P/E than I was using, although it would be closer to a growing company.