Welcome and Congrats

, the TCH is getting hard to find on the lot and I've heard of 3 month long waiting lists...
The Aftermarket has better GPS units , but the only way to have the Energy and Consumption Screens (bar graphs are every minute in the TCH vs. every 5 mins in the Prius) is to order/buy your TCH with the Navi Option.
I guess you could install the factory unit after taking delivery but the retrofit and cost would be at least several large , assuming the part number(s) are even available - might ask your dealer... If you want/need the visual impact and feedback in addition to the MID and MPG gauge I would sell and rebuy instead of trying to add it ...
BTW , What color did you purchase ?