Newbie to TP, have read thr FAQ but struggling to fine tune the BAH below to optimise it.

Currently
NCL or MAN to LHR
LHR to ATH
ATH to LHR
LHR to NCL or MAN

480 TP. Need 400 to get to Silver.

With BAH its £714 for the hotel in mind in Athens

I'm London based, so ideally would like to start there.

When I try multicity booking page (to try LHR to JER, back to LHR and then onto ATH) it takes me away from the BAH booking page and doesnt say anything about double TP.

Be really grateful for help fine tuning it and keeping the cost low.

The alternative is to do it direct from LHR to ATH, bag 320 TPs for £475, and then spend another £200 doing a day trip to say AMS.

What do you think? This is all for Jan 2024.