Looking at doing a no chill biab in the morning. I have made several brews already but always used my immersion chiller and followed recipes I've found with a few changes. I'm now looking to brew a few SMaSH brews to get an idea of hop and grain characters. I've got marris otter and pilsner plus a few kg of wheat plus half a kg of Gladfield gladiator. As far as hops go I have Amarillo galaxy Waimea summer and a little mosaic. What im struggling to grasp is there a certain ibu I should aim for and if I use pilsner grain with no chill and do a 90 min boil should the first hop addition be at 60min for bittering instead of 90? Also do I let the wort sit in the kettle after flame out before cubing or get it straight in there and sealed? Sorry for such newb questions, I've read to much and confused myself and don't won't to brew something that is to bitter and undrinkable in the name of a learning curve.