RPM surge when accelerating from dead stop

My jeep used to idle at about 600 but recently it idles at 1000. If I leave it running for 10 mins or so in the morning when I first turn it on, it goes down and stays normal-ish. Later on during the day when I start my car 7/10 times it starts at 1000 but goes down within a minute or so and stabilizes when I put it in drive.50% of the time though, I have issues when accelerating from a dead stop like at a stop light or stop sign. The longer the stop, the more likely it is that I'll have issues. This isn't constant, but when it does happen, I pretty much have to control the clutch and get it to the right gear. Sometimes, not often, I absolutely cannot accelerate and my rpms are surging to above 3000, although I try to not let it get past 2000. I can usually fix it/stabilize it by pumping the gas pedal and pray that the next stop is better. I have three codes showing on the dash: p0455, p1757, and p1762. I had all the solenoids replaced in the transmission recently when the issue first started bc they were burnt out, but that was only a temporary fix and the problem returned in a different way. I think there is a connection between the AC and the issue, but that's not entirely related bc the problem is there whether I turn the ac on or not. If I have the AC running most of the day, I usually lose a lot of coolant. No one can figure out what is going on and the best mechanic I know here in town thinks that I'm on the verge of needing to rebuild my transmission but not only is that not feasible for me financially, I have a feeling its something else but obviously I can't say for sure. If you need any more information/specifics I can probably answer adequately, I just don't know what else to say about it or how to say it I guess. Any help is appreciated! Thank you! :)