Draft AONE5 Plan.

Earlier this week, I first discovered this valuable site and posted my first message asking for general information on a planned RTW trip including AU and Southern Africa. Number_6, SanDiego1K. Gardyloo, Unterwegs,and others provided extremely helpful advice. Over the past few days, my wife and I have spent most of our time trying to follow up on the suggestions- - immersing ourselves in the archives of FlyerTalk, consulting ExpertFlyer, SeatGuru, etc.. Below is our current AONE5 plan, and we would be grateful for any critique and further advice.

Background: We are primarily interested in visiting all the destinations listed (in some we will be staying 6 or more weeks), rather than collecting mileage per se (but are not averse to doing the latter). We haven’t yet completely decided whether it is worthwhile to us to do it as A versus D. We plan to leave in mid-October. We will use FF points (on AC) or pay extra to get from YVR to CAI.

Our AONE5 Draft Plan:
CAI-LHR(transit)-CPT-(surface: CPT-WDH)
WDH-JNB-SYD-(surface: SYD-MEL)
MEL-PER-SYD
SYD-SCL-PUQ-SCL-IPC-SCL-EZE
EZE-JFK-DFW-YVR-JFK
JFK-LHR-LED-LHR-CAI.


Some specific questions are:
(a) is this itinerary a valid one?
(b) after leaving Cairo, we immediately want to get to CPT. Is the transit through LHR the best way of doing this? (hopefully, it does not count as a formal visit in EU prohibiting subsequent re-entry).
(c) given the 5 SA segments, I assume that one can pay for the extra one?
(d) are the surface trips from CPT to WDH and SYD-MEL OK?.
(e) for extra travel within Australia, can one get a special price on a Qantas pass (given that one is using QF to enter and leave the country) which would seem better than paying for extra segments that would still be subject to the restriction on a single cross country flight?
(f) are the EUR segments at the end valid (it being the continent of origin)?
(g) are there any obviously bad segments (ie, we should travel them outside the RTW plan and replace them with something else instead)?
(h) of the OW airlines, we are currently only members of the CX FF plan, should we join and get credit on another?
(i) can someone confirm that the current costs for a AONE5 and DONE5 ex-CAI are 46270 and 33350 Egyptian pounds?

Based on reading the various posts, if this is a valid itinerary it would seem that we would want to contact the AA RTW desk and then contact Emeco in Cairo. Right? The initial advice was so helpful, and I hope it is not imposing too much to ask these further questions. Thanks.