I'm definitely not an expert but I'll offer my opinion anyway.

I think this rule applies when you're serious about lifting and plan to work out every day. Before I started BFL, I asked a question about combining and was assured that it was fine and to start with weights, since it required more energy, and follow with cardio.

There are MANY different methods to working out and I don't see why yours wouldn't be fine. Definitely better than nothing at all!