Never had useful amounts of travel on *A before, favoring Oneworld for the routes I've usually taken. Recently spent the last of my Avios and not many AA miles left. I do have 90k Amex Membership Rewards for which I have no particular plans.

I have a flight booked BOS-SFO-TPE,TPE-LAX-BOS in early August. The US domestic legs are JetBlue Mint (irrelevant here I suppose) and the trans-Pacific legs are on EVA Air in premium economy (P and K buckets).

I have long-dormant accounts at Asiana with 20k miles and EVA with zero. Wondering which of those I should credit the EVA flight sectors to.

We are tentatively looking at a RTW in the next year or two and were intending Oneworld DONEx i.e. business class. No reason we need this to be on Oneworld if I'm starting to get status elsewhere, but with business class we'd get most of the same benefits as status anyway.

Would appreciate any insight! Thanks.

(1) What is your home airport? (SFO, LAX, MCO, etc.) BOS
(2) What types of fares do you usually buy ? (C, F, Y, etc.) economy for personal, premium economy for work
(3) How many miles do you usually fly each year? (<25K, 25k-50k, >50k) likely to be 2-3 return trips to TPE in the next 12 months. otherwise 1-2 transatlantic per year. I guess that'd be 25k-50k for sure, or >50k if I really prioritize *A.
(4) Do you have any kind of status at present? What is it? (UA Premier, M&M Senator etc) none
(5) What is most important to you in a FFP? (Frequent upgrades on travel, priority services when flying the airline, good award redemption rates, free lounge access, etc.) lounge access, priority services. I often struggle to find good uses for miles I accumulate.
(6) Which routes do you fly most often (US Domestic, Transpacific etc) very little US domestic. will be transpacific for work and transatlantic for pleasure
(7) Preferred Airlines no experience with any *A airlines in last 10+ years
(8) Do you travel for work or pleasure? (Can you chooose your airlines, class of service?) for work I can choose my own itinerary but limited to premium economy unless exceptional circumstances