Don't kid yourself - you know you're going to do it over again. :-) I have a feeling that you are similar to me, in that the phase flip will continue to "bother" you until you "fix" it. Even though the end result would most likely be the same... It's just the way we're "wired" (pun intended). ;-)
What's funny is that I recently changed all of my front stage speakers and have been re-tuning - and I couldn't figure out why my crossovers weren't lining up correctly. Here it's because I forgot about REW using some other crossover type for "Subwoofer" and "Bass Limited"! So I just made the exact same mistake even though I already knew about it! You post made a light-bulb go on and I realized what was wrong. :-) So thanks for bringing it up!