I am back.

Acknowledging current sentiment about best countries to originate a RTW includes but not limited to ex-ARN, ex-MCT, ex-WAW and ex-HEL. Here I am, after hashing out various itin possibilities, I now focus on these 2. Warning: Lots of rookie questions.

Itin 1 - ARN-LHRx-LAX- ORD-ANC-DFW-SFO-JFK-HKG –BOM-SIN-NRT-SYD-LHR-MCT-LHRx-ARN
FARE: DONE4 US$9,181 + $597.74 (taxes) = US$9,778.74 {I got this online without calling}
MILES before bonus (from milecalc dat com): 58,129 miles. {note: MileageMonkey shows 60,254 miles, and red-flags 2 segments (ORD_ANC; HKG_BOM) as no OW service.
Total segments = 16

Question 1: Is the above current and lowest fare available from AA and NOT from BA?
Question 2: Is milecalc give the most accurate mile count? I have used mileagemonkey also.
Question 3: re non-RTW access to ARN from SFO, how else can I leverage the Plat challenge (I am looking at calendar mid-year 2010)?

Itin 2 - MCT-LHRx -LAX-ORD-ANC-DFW-SFO-JFK-HKG-DEL- NRT-BKK-SIN-PER-SYD-LHR-MCT
FARE: DONE4 OMR3,250 {I got this online without calling; and think it is before taxes & surcharge, right??}; exchange rate 1 OMR = US$2.6008 {unsure if it is current??}
MILES before bonus (from MileageMonkey): 57,291 miles.
Total segments = 16
Fares = US$8,452.26 (using above exch rate)

Question 1. MCT-LHRx-ARN (BA flights only; can’t find AA codeshare); same true for last segment LHR-MCT. Does this prevent me from having AA to issue ticket? (think fuel surcharge & taxes of course.)
Question 2: How can I find out the EXACT fares plus all surcharges? (same Q for itin 1 as well)
Question 3: With Itin 2, can I have tickets issued by AA. (trying to avoid BA & its related taxes + surcharges)?
Question 4: re access trip to MCT, is this {SFO-DFW-LHR-AUH-MCT-AUH-LHR-LAX-SFO} the best in terms of miles & cost (RT fares about US$2,000 ai)?

General questions applied to both itins:
1. I often work on a new itin on different computers, is there a way to port itin from one computer to another, including all the already chosen flights?
2. What other items I need to address before I call the AA OW desk (e.g. possible seasonal discount; US greenback value etc…)?
3. When do you think I ought to ticket if my first segment takes place in May 2010?
4. What possible enhancement of above itins in terms of miles (more) and $ (less)?
5. Which site do you use for mileage calculation, milecalc, mileagemonkey or others? (OW site somehow does not show miles early in flight search stage, or am I missing something?)

I appreciate all the comments and suggestions. Thanks.