dbol has a half life of about 4 to 6 hours. steroids work well, with the least side effects, when your blood levels are steady. i would split your 30mg up into 3x day. regardless of your training.
milk thistle is a good to help with liver protection, i would suggest taking 1000mg ED during the time you are on dbol, as well as for an additional few wks after you have finished the dbol