What is the easiest way for me to maximise TPs for trip from LHR to HND in business. I have normally flown direct with BA but thinking about doing a stop over somewhere as it’ll take me close to BAEC Gold for the first time.

I am thinking with Qatar via Doha in business. If I have worked it out correctly it’ll be 560 TP (which would put me on 1220 (3 months into my year). What’s the best tools to quicker find this out?