If an engine can handle a synthetic after "X" number of hours it can handle a synthetic from the first minute. Natural oils seat the ring faster, nothing more since there's no other parts that have the need to match surfaces. Thermal cycles are far more important in a cast engine assembly during the break in process than seating the ring, which will happen regardless of what oil you use.

The only reason to suggest a 30-1 mix is for the manufacturer to protect himself from the user. Such a rich oil mixture keeps the engine cooler and lessens damage from a lean run, and/or poor cooling due to inadaquate airflow, which is all to common.

Bottom line is to pick a good oil and run with it. Echo is one of the good ones. BTW, we put more hours on r/c engines in a month that most, if not all, r/c engine makers put on engines in a year. We've learned enough to qualify as experts.