You can use a prop that has been drilled for the 3W/DA/zdz. I have used them on my BME engines before. Just enlarge the center hole like you mentioned. The 2 props that I prefer on my BME 100 are the Menz 26-10 and the Airwild NX 26-10. The BME engines are easy to use and powerful, so you will like it. As far as the spinner goes, just pick a size that fits your cowl.