There's a certain way of doing things. People should take an AI, especially if it's their first cycle, and they're using dbol.
If he wants to keep things simple he could switch out the dbol for testosterone. Right now the cycle is 500mg test per week, and 210mg of dbol per week. 1000mg of testosterone per week might be better, and it'll be safer. He could also start at 750mg of testosterone, and up the dose part way through the cycle if he wants.
Remember you can't drink while using dbol, and before you take any medication, make sure it doesn't stress the liver. Oral steroids can be dangerous if used incorrectly.