.... If she has visitor visa will there be any issue if she comes here and goes through AOS? Will there be any issue at port of entry? AOS make any difference with regard to A/L qualification issue?
General wisdom is that if you send in DS 230 etc you show imm. intent. If she has not done it yet then yes she can enter in the future (you wont loose anything if you send dsp 122 late), BUT then there's the rule 'Stay 90 days before filing i 485' to overcome the 'intent' as well, which I think for a DV case is difficult to prove, unless you prove definitively that you checked online winner status late. (her CN high/low will play with the timing as well. v. risky if high CN).
Yes, USCIS will too have to clarify the 'education' and if it comes to that and they are unsure case MAY drag.
CP at CMB is better for that cos ppl there are knowledgeable on local issues and standards. (they may give you an answer before hand on the issue if you ask now, but I doubt. Even if they give a positive answer now the CO at intvw has the last say)
She will not be able to come 'visit' you here if she fail CP. So you can take a chance do the timing correct and and try AoS.
If you do that I suggest you get 'proper' legal advise as well on all pros/cons.
I honestly think that if the CO get good 'local advise' (from what they call country resource ppl) they should accept older yrs O/L s for DV. But again they may say that they need to be consistent, who knows!! (case may also drag on AP for that)
Hope you will be able to weigh in your options for good.
Best!
PS: Generally, if one fails AoS and if one wants to, you still CAN go back for CP. (not however with some big issues like 3/10 yr bar, there are such exceptions where it is just useless to do). Say AoS decide its A/L s which fail you, you can go back for CP and ask for their opinion as well. Costly but if timing is right you CAN do it before Sept. 30!