To run test only on a first cycle is good advice and is hard to argue with. I too am a believer on knowing what compounds are doing what. It drives me nuts when I see a relative newcomer doing a cut with say for example...... test-p, tren-a, mast-p, primo-e, T3, clen, and GHRP-6 w/mod GRF 1-29... holy shit.
That said, taking a moderate dose of dbol IMO is fine on a first cycle for the first 4 weeks. Long ester test does not kick in for about 4-5 weeks, so why not take advantage of the quick kick in of dbol? You will see how you respond to dbol, and by the end of the cycle the gains from the test will be apparent. Another approach if you feel you want to know how your body reacts to test only is to jump start with test-propionate for the first four weeks. Problem with that is you need to pin every other day, and most people trying a first cycle are not real keen on that.