Scala is a language, not a framework. You can use Spring with Scala too [1]. Personally, I wouldn't use it for an enterprise project just yet, because of its compatibility issues. And why on earth Java SE? The enterprise edition gives you everything a standard edition does, plus libraries for messaging, transactions, persistence, basically everything you need to write a large scale enterprise app.
[1] http://www.infoq.com/articles/scala_and_spring