I inherited one of those when we moved here, Falconbird and felt quite lost without the double oven. To make matters worse, it was a cheap and inefficient oven. And to compound that, there was no room, without ripping the very nice, newly fitted kitchen apart, to install a double one.
I am still working it out two years on! I have a couple of slow cookers which ate handy if it's stews etc, but it is a fine balancing act with all the other dishes. I honestly couldn't manage without my microwave - which I love anyway - because heating up dishes is so quick.
I am seriously considering one of those buffet things, but have spent most of my life resisting the hostess trolley....
Good luck.