Road Tires for a Gravel Cycle?

I have an Ozark Trail G.1 Explorer gravel cycle. I've been riding it for a little over two years. I've done some maintenance on it (cleaning, lubing, pumping up tires, etc.) and swapped out the saddle and pedals. I've done hundreds of miles of riding and a 40k gravel cycle race.

I'm signing up for a sprint triathlon and would like to put road tires on the bike short term, but not entirely sure what kind to get. Currently it has Kenda 700x40C gravel tires on it. Would these Vittoria Zaffiro Pro G2.0 Road Bike Tires be okay? Anything I should be aware of aside from getting some different inner tubes for the tires?