Gaviscon doesn't do anything for my LO's wind, in fact I would say it sometimes makes it worse. She has infacol when she's having a really windy phase, and gripe water if its just a one time thing.
I'd say see how you go with just the Gaviscon and then if LO still gets wind use infacol; or gripe water.
ETA - Gaviscon and Infacol don't really do the same things, Gaviscon thickens the feed up making it harder to bring back up, Infacol makes all the bubbles of air join together and come up as a big burp. Also, Infacol isn't absorbed into your babies blood stream so there is really no harm in giving both if you think it is neccesary