Gliding is a great, and cheap, way to fly. But, IMHO, you need to commit at least one full day a week to it until you are a reasonably competent solo pilot.
If your family are happy for you to do that, go for it. You never know what's round the corner and, if your financial circumstances improve, a 'C' certificate in gliding will open the possibility of a cheaper PPL. You may even find that gliding gives you all you want from flying.