Help my Monstera

I have been a plant parent to this Monstera Deliciosa for 3 weeks. I've done my best to learn everything to help Monty thrive, but I need some help.

Monty has 4 stems/leaves growing in one direction and a 5th stem/leaf that is an independent queen and doing its own thing.

Here are my questions:

1) I want Monty to grow nice and tall, so I'm sure I need to give steak it with something climb-able, but with the weird growth of the independent branch, I'm at a loss for how to properly steak Monty. That leads me to question...

2) Should I cut the independent branch and propagate Monty? If I prop Monty, when is the right time to do so without stressing the new growth (the leaf just finished opening yesterday).

#monsteraplant #plantjourney #plantpropagation #plantmom