Ok, so after reading through all 23 pages of this thread, I am now confident about the best option to purchase: the PS3 Collector's Edition ($79.99 USD) seems to offer everything in one single package.
I have a 1.0 Standard FFXIV Account and would like:
(1) the in-game pre-order bonuses [Early Access + Cait Sith Doll Minion + Mog Cap]
(2) the in-game collector's edition bonuses [Helm of Light + Coeurl Mount + Behemoth Barding + Baby Behemoth Minion]
(3) the physical collector's edition items [Exclusive Box + Art Book + Special Movie Disc + Special Soundtrack + Art Card Set + FFXIV: ARR Themed Security Token]
So from all the information that I've gathered, with the purchase of the PS3 Collector's Edition, I should be able to register the new product code onto my Sony Entertainment Network account via PS3, then link it to my existing Windows account to receive all of the aforementioned in-game bonuses for my existing 1.0 character and all new characters that I create thereafter.
After all this, I believe that I will end up with a single FFXIV: ARR Service Account which can be played on either Windows or PS3 and it will be considered "2.0 Collector's Edition Status".
I would greatly appreciate it if anyone can verify all of this information! I'm glad I did some researching before I made any purchases, because my initial instinct was to just order the Collector's Edition for PC, but that evidently requires an additional Collector's Edition Digital Upgrade x.x.