Pay down to 80% LTV or pay off 'bad debt'?

[Jackson Tate]

Hey BP,

I'm currently in the process of selling my primary residence and purchasing a new home closer into town. 

As of now, I'm using the proceeds from selling my home to put down 10% on the new home.

Additionally, I have a flip that is scheduled to close next month (after the other two have closed).

I don't currently have enough to put down 20% on the home I'm buying but will receive approximately 100k from the sale of the flip.

I'm debating between using some of that 100k to pay down my new mortgage to 80% LTV or just eliminating my wife and I's 'bad debts' and having a clean slate.

I'm also wondering if I should use that 100k to turn around and invest in another project.

Any thoughts?

Cheers,

Jack