Journals welcome.
FFI- I'm working on all the solos. The only one I haven't completed is the Thief. Also, contrary to popular belief, White Mage is pretty damn easy until you get to the Temple of Fiends. Why? RUSE. Since it increases her Evade up to godly and can stack, she's almost invincible.
FFII- Bleh, I tried a solo but it was boring as hell.
FFIII- I don't know for sure, I'm considering a Solo Fighter or perhaps a 4 Bard party.
FFIV- Recently I did a Solo Cid challenge (pretty damn boring) and then a Solo Dark Knight Cecil challenge (not quite as boring). The Dark Knight had pitiful HP growth and was pretty god-awful on the moon. Able to beat, though. Considering a Solo Child Rydia.