The method in the manual sounds fairly good although it only totals to 30 minutes before flying. I like to give ringed engines an hour or so on the bench with a bit of just barely 2 stroking near the end of the hour. I've never found it necessary to keep the glow igniter on because they'll all run very rich, slow and cool without it. Ringed engines do take a long time to get fully run in as your manual suggests in the last sentence. I noticed a very gradual increase in performance with my ST G51 over a 15 hour period which is exactly what ST used to advertise with their ringed engines. I've just finished 75 minutes of bench running a ringed Enya 61 before starting to fly it but the ring itself has just begun to run in. The ring will be fully run in when all the machining marks have disappeared but it's more than capable of being flown before then. The seal just gets better and better. The Enya BTW uses a brass liner plated with Nikasil .

One thing I'd disagree about with the manual is their recommendation on fuel. You don't have to use whatever you're going to fly with, even zero nitro is perfectly OK, but I'd use a fuel with a fair bit of castor.