A large portion is for me to smoke and a small portion will be undiscussed reasons
In that case I seriously hope you hone your skills and stay indoor!
last thing you need at 18 is someone spotting you with big wavy plants coming outside in the sunshine.
realistically I’d be saying grow 2-3 plants this time.
stay inside in a tent or area that you’ve closed off.
make sure you perfect your environment and growing techniques to maximise your yield from your 150w.
then after a couple of undisclosed payments get a second panel and increase by x2.