7d with a 24-70 f4 IS, is a good combination if you like to shoot at longer focal lengths or if you see upgrading to FF sometime soon. the 24-105 f4 IS is still a great lens although it's getting on a bit now but there's a good discount on it at the moment. A great APS-C lens to get is the 17-55 f2.8 IS USM or a 18-135mm STM although it's not a fixed aperture lens or my favourite walk about lens for APS-C 15-85 IS USM can just about do most stuff and is nice and wide for landscapes.