AI Basket using existing coins in Wallet

Me and manny others would love to have a feature in AI Basket that allows the basket to use existing coins for creation of baskets.

In example if I have already 200$ worth of BTC and I want to create a Blue Chips basket with 1000$, then the function should allow me to use my BTC and the rest of my 800$ should be used to buy the rest of the basket coins.