How to fit different shapes inside one big shape in order to save space?

Hi,

I'm trying to do something in Illustrator and I'm not sure I'm going about it the correct way. I'm gonna outline my steps and please let me know if I should do something differently and how to do the last thing.

I basically have a text that I have to divide into just 2 or 3 letters at a time and fit it into a box. I'm trying to find out if there is a button I can click on Illustrator and it will automatically fit it into the best combination to maximize the space I have.

This is what I'm doing:

-Type out what I need it to say and start dividing the words into 2 letter increments.

-Unite those faux 'syllables'.

-Release to Layers (Build) and erase those extra layers I don't need (is there a better way to do this, I'm sure there is).

Now I have something that looks like the picture attached and just need to fit it to the artboard in the best way possible. I tried to align to artboard with no success.

Let me know if you have any clue! Thanks!