I am about to try to print my very first B&W print. I am using Ilford Ilfospeed RC Deluxe #2 grade paper. I am going to develop it in Dektol. First I am going to make a test strip but I am wonder approximately how long the expose the paper with the enlarger. I know the test strip will help me get it closer, but where do I start...1 min...45 sec...???