Some good ideas here.
You don't need really Big. My first bench, which I used for a long time, was 2' square. Made a lot of good ammo on it. And while the top especially should be solid, there's no reason why you need massive and heavy.
If space is at a premium, then the idea of using a clamp-in-place sheet of thick plywood with you gear mounted to it on top of a kitchen table or WorkMate is a good one. You can always use the kitchen counter or table to lay out the bits and pieces if there isn't room on your bench. I would get a sheet of that non-skid rubber sheeting to place between it and the table. Canadian Tire sells it.
You don't need really Big. My first bench, which I used for a long time, was 2' square. Made a lot of good ammo on it. And while the top especially should be solid, there's no reason why you need massive and heavy.
If space is at a premium, then the idea of using a clamp-in-place sheet of thick plywood with you gear mounted to it on top of a kitchen table or WorkMate is a good one. You can always use the kitchen counter or table to lay out the bits and pieces if there isn't room on your bench. I would get a sheet of that non-skid rubber sheeting to place between it and the table. Canadian Tire sells it.