Our oven temperature is usually around 180-190 c according to the thermostat, which I think is more like 150-160 ( but I haven't actually measured it, that's just going by cooking times.) We tend to keep the fire just ticking over, it would get a lot hotter if we could be bothered to feed it more wood! We mostly burn wood because we have tons of the stuff for free- however, if we supplement it with coalite the oven gets a lot hotter.
We mainly use the oven for stews, braising, slow roasts, etc. also proper traditional puddings like rice pud, bread and butter pudding, etc. Also baked potatoes, baked apples, etc. and traybake type cakes that can be done at about 180.
The hot plate gets properly hot and is used for everything you'd use electric/ gas rings for. I love the fact that you have q subtle control over the precise heat of a pan by being able to move it to hotter or cooler parts of the hot plate, I never could quite get my head around the lack of that control on an electric cooker.
We have an electric fan oven for things that need a particular temperature or that we want to be brown on top. And for when the wind is just in the wrong direction or we didn't think ahead to get it up to temperature in time.
I think it's a totally different approach to cooking really, much more suited to "traditional" dishes that suit longer cooking times. And because its just there, hot, it makes sense to cook something for hours, or make jam, or whatever, things that really don't suit electric cookers and cost the earth if you do use them!
I have read that if you get the oven really hot, you can take out the lower shelf and use the "floor" of the oven like a bread oven or pizza oven- I keep meaning to try it but haven't done yet! Would love to make my own authentic artisan pizza in the rayburn- one day I will get around to it!
Oh and yes, definitely get a kettle for it! I swear my electric bill was about half made up of boiling the elec kettle!