Brendon, IMHO, your proposed Itinerary is a bit too ambitious, as you'll have to allow for travel times between locations as well. You'll only have TWO days for touring Paris, as you'll arrive in Europe the day after you depart. You'll also be jet-lagged for a day or two after that, so won't be up to full "touring speed". One area that could be especially problematic is touring the D-Day beaches. That's not ideally done as a day trip from Paris, especially as the battle areas are considerably "spread out". Most (including myself) recommend spending at least one night in Bayeux and taking one of the excellent day tours available in that area. IMO, that's absolutely the best way to get a sense of the history. You may be able to book a half-day Overlord Tour and then return to Paris, but it would be a LONG day! Rather than a LONG train journey from Switzerland to Spain, you might consder using a budget airline. For example, SkyWork Airlines has flights from Bern to Barcelona or Madrid. Flight time is ~1H:40M to Barcelona. I assume your location is in Washington state? You might consder taking a drive up to Edmonds one day and use the free Library at Rick's headquarters. You could also speak with Ricks' staff or arrange a travel consultation. Good luck with your planning!