Beating a dead horse here, but yes, go with the bigger one if you can.
Yes, it’s very big. I find it hard to find somewhere to set it up! But as others have said, some boards on top of a table work just fine. I hope to one day have a table dedicated to this map, but that’s not now :)
My main reason for saying the larger map is because it’ll make your games look cleaner. There are so many units and buildings, it can certainly become cluttered, as I think we all know with AA40 in Western Europe. You’ll be happy with the extra space I’m sure. Even if it isn’t strictly “needed”, it’ll still help your games out.
Also, my usual default is “why would I NOT get the bigger and better version?!” :)