Yeah I think sunset is much better, it helps with the mood "everyone's arrived and tired, they have to go to sleep and thave heir adventures in Cloud City begin on the next day".
And as for the original shot of the Falcon's approach it's one of these shots you can't replace I think, I'd personally prefer to continue seeing Cloud City in the distance for its 1st appearance rather than a clse-up right in your face, it's less subtle IMHO. And it's a real good shot, even today :)