By the way, I've made probably hundreds of loaves from your recipes at this point. Your recipes are just so reliable. Thank you!

Don't buy both!! She can use the microwave with open door and light. Heat up some water and leave it in there with a thermometer – mine stays close to 80 (and starter/dough temp is similar). Many dough recipes proof for just a few hours and then retard (typically) in fridge. Don't spend $350 on gadgets. Great bread can be made without these overpriced/overhyped products.

I have just had a huge fuss with lava rocks. The first pack I bought was filled with dust and grit, many broken into gravel, returned. Found another brand. Despite rinsing them amply, prior to use, they left a huge mess to clean up in the pan. Grit everywhere in the sink. After baking with them, rinsed and rinsed again, still filthy. Waaaaaaaaay too much fuss!! Not a very good recommendation to be honest. I will try the ceramic ones. The ceramic ones you recommend are whole, whereas many other companies make split briquettes, for the same price. Much more surface area. Why recommend the whole ones?

Challenger sells oven gloves too. I bought them when I bought my pan and they work perfectly. They fit my hands and I never feel any heat through them when dealing with the baking pan.

Culinary lava rocks or ceramic briquettes (a little cleaner).

It's amazing. I'm a bit behind in updating these tools to include it!