B4A includes all the features needed to quickly develop any type of Android app. B4A is used by tens of thousands of developers from all over the world, including companies such as NASA, HP, IBM and others.
I'm also trying to do the same procedure
And I can tell you that if you've never done it, it's not as simple as it sounds
There are several guides explaining how you should proceed
But many are not up to date and therefore the screens that appear on Google do not match, others are fragmented and you have to jump here and there.
At this time, there is no single document explaining the complete procedure