Just placed an order for a bunch of B&W chemistry. Although I have developed before in cafenol, I have never used true chemicals. I am really looking forward to it. I ordered 3 rolls of HP5, 35mm. Any special way you would recommend shooting this? I assume I will shoot one roll at box speed but I am undecided about the other rolls right now. My last roll was T-Max 400 pushed to 1600.