Spring Boot (Scala Project) - Gradle or SBT?

Question

Java

Hello,
I decided to try at least a little Scala. Therefore, several questions of a general nature appeared.
1. I use Spring Boot, I change the main function - everything starts fine, the mapping is written in Scala + Spring MVC - visible. Question: Can I have problems if, for example, I want to later attach MongoDB or Spark to this project in order to work with this in Scala? Problems with the Spring Boot project? The question is a little silly, but for example, I have not seen any Spring Scala Boot. Or how are Spring Boot projects done with Scala?
2. With Scala projects - it is recommended to use SBT as an assembly. I'm more familiar with Maven and Gradle. If I make a Gradle and not an SBT project, what difficulties can I run into? What does SBT have that Gradle can't?
Thank you.