I am another newbie looking to book a mini RTW from YHZ. I've started the research, and wonder if anyone could help me with an itinerary I think I've got started with.

YHZ-EWR (on UA) hoping to combine this with the following flight)
EWR-LHR (Air India - need to spend about a week in the UK) STOP?
LHR-KHE (Kherson, Ukraine, for about a week - Turkish flies there from IST, but KHE won't come up on the AP site)
KHE-BUS (Batumi, Georgia, through IST, also TK)
BUS-IST-YHZ, through EWR, combination of TK, UA/LH/AC

Assuming this is even possible, which I don't know yet, which should be my destination? Kherson or Batumi?

I also want to factor in an A3 gold card run, when I'm in the IST area. Will pay for that with money.

I have to be in the UK for business June 6-9, and want to plan the rest of the trip for after that.

Does any of this make any sense? And, if I'm asking for too much, please tell me. But any advice on how to make this work would be greatly appreciated.