^ I'm glad you've finished the season, JD, because now we can have an actual conversation.
Now to tackle your queries one by one:
1) Ford wasn't masterminding EVERYTHING that happened in Season 1, but a good 90% of what was happening was in fact being done with his knowledge and tacit consent, yes.
2) We don't know exactly when Ford realized that Arnold was right and he was wrong, but we do know that he had Bernard specifically develop the reverie coding for the purpose of rectifying his own mistakes and realizing Arnold's vision of sentient and self-aware Hosts.
3) Dolores started 'awakening' after hearing the phrase 'these violent delights have violent ends', but she was also legitimately 'glitching out' since she retraced the journey she'd went on with William and Logan 30 years earlier, which culminated in her returning to Escalante, the town where she'd shot Arnold, and her conversation with Ford where he restored her true memories and planted the seed that led to her consciously made decision to kill him.
4) Ford was definitely responsible for reprogramming Maeve, and it's through her, moreso than any other Host, including Dolores, that we see the fullest scope of what he was willing to do to rectify his own mistakes. With Dolores, he was taking advantage of the resumption, triggered by the reverie coding, of a process that had been started 30+ years earlier, by Arnold, but with Maeve, he used the reverie coding to create a scenario in which he could deliberately 'influence' the 'awakening' process himself, changing her programming directly under the guise of her 'glitching ' and letting her/instructing her to bond with and recruit Felix. It's also probable, although not completely provable, that he knew or suspected that it would be memories of her daughter that would be the 'trigger point' for her achieving full sentience.