Recommendations for a full flowering winter flower stand

This wall usually gets full sun as it's north facing, and in the middle row I planted some snapdragons and stock from Bunnings seedlings that are not doing much 🙁 Should I deadhead them to get them to rebloom? The disacus in the front row are also not flowering, mainly because my cat bit the flowers off (hence the tiny pot of cat grass in front 😆). Maybe could replace that with alyssum.

Does anyone have any suggestions on what other flowers I can put in that will bloom until spring? Maybe daisies in the last pick? Also I had some lobelia in a hanging basket that burnt unfortunately. Second pic is AI showing what could be in summer only 🙁