Huge congrats! Mini pochette is a great LV piece!
I love mine! I use a long chain to wear it crossbody as a small bag as wel!
Where do you get an additional chain and what length is it?
I also order an additional chain on ebay and I'm waiting for it to arrive. If you look on e-bay at sellers k-craft or rebirthday you can find the chains, there are 125 cm or 50 inch.
You can find more information here https://www.youtube.com/watch?v=rCFcejH-2eM or https://www.youtube.com/watch?v=zFwFx35uTIg