Ok, for the reverse a couple of things jump out...most notably that mornings are a pain in the arse to deal with (evenings are comparatively easily). What I would do is push the Meteor later by a shade: Right now the timetable has it leave Richmond at 0435. With the present 2:04 runtime into Washington, it theoretically should arrive at about 0639 (and based on experience you can knock about ten minutes off of that on a good day; your earliest feasible arrival is therefore basically 0630). The timetable north of RVR is mostly a suggestion (a loose one at that)...so other than a vague handle on runtimes I'm sort of ignoring that for right now.
Anyhow...I mention moving the Meteor later. What I would WANT to do is move the Crescent earlier, but that risks sandbagging traffic out of NOL (0700 is already getting touchy IMHO). I'm going to put an example together of both.
(1) Meteor Later:
Meteor should depart RVR at about 0715 instead of 0435. This would put it at Union Station no earlier than 0900, which would put it on the tail end of the morning rush (the timetable, assuming 2:04 RVR-WAS, would put it into Union Station right after VRE312 and VRE332, with no Amtrak trains to follow until AMT174 at 0944 and AMT020 at 0953). In theory, I'd have the resulting train depart at sometime around 1030 (after the Crescent has had time to clear the station, albeit possibly "chasing" the Crescent up the NEC). I'd throw in a rather large timetable pad at either Stamford, New Haven (where it would arrive off-peak; a 1030 departure from WAS would put it into NHV between 1530 and 1600; STM has platforms that can be worked with (I wouldn't dare touch NYP with a pad), or PHL (which could also work and you'd be even further off-peak). PHL is probably the most promising if you need extra padding. You'd probably end up arriving in BOS after the evening rush anyway.
(2) Crescent Earlier:
I'm ignoring the obvious issues with moving the NOL departure earlier; I recognize those as a near-fatal flaw here (though the better timing ATL-WAS would be a major, major plus). Let's just assume that you have a second train for that or something. In this case I'd move the Crescent's arrival into WAS back about 2:45 (so about 0708, though I'm sure there's padding in there), aiming to get both into the station reasonably close to one another. I'm actually not opposed to moving both trains a little bit earlier still (another 15 minutes or so), with the main sections going up the corridor on the heels of one another. The main risk here, from what I can tell, would be a delay cascade putting the Boston sections into BOS near rush hour...and I'm not sure how BOS compares to WAS or NYP in terms of rush-hour jams.