I generally use the best ROC for entire climb LB but might look to do more cruise climbing when terrain permits.
I found this in the Lycoming owners manual online. They do mention elsewhere about avoiding CHT's above 400f for prolonged periods, despite this extract saying keep it below 435f for maximum power cruise flight.
Section 3 (7)
https://www.lycoming.com/sites/defau...2060297-12.pdf