Brighton is pretty far from public transport, I know because I spent a couple of months dragging my gear around. Altona is probably a little better, its much closer to the station.
Send me a PM, I'd be happy to help you out with lifts when I go, but I'd probably need you to take a tram out of the city just to avoid the bumper to bumper traffic in the city itself if its mid week kiting.
The alternative is to pony up $2K and get yourself a scooter, then pack you gear on your back and use that to get around.
You can check winds
earthsci.unimelb.edu.au/engage/dynamic-earth-updates/bay-winds or
www.seabreeze.com.au/graphs/vic.aspWinds are seabreezes in summer and frontal in winter. Frontal is more gusty, although the northerlies in summer can be pretty gusty.