Juan Pablo Sala

ok, made it with fire bricks, good so far, also made the outer shit metal to contain the insulation.
Now iam looking for some advice about the floor of the RMH, I have searched in the book and in the videos and not sure about how to continue, here is a photo to try to explain my self:

Maybe someone can point me to a photo, video or explanation about how to follow from now?

And here are some more photos, maybe you have some observation/correction/advice:

Thanks Glenn
Firebricks and refractory bricks are the same thing?
If they are not the same, which is the one in the photo?
With these bricks, how mach perlite/clay insilation do I need?

ok, so the metal sheet inside the heat riser is not a good idea, what do you think about the thinner fire bricks, they are 2 centimeters width

Thanks Glenn, I have experience with clay, but not much.
Yes, I have the book, the 3rd. edition, have read a lot of posts from permies and all the videos I found but I still feel insecure
Here there are some photos of the RMS so far:
This are the fire bricks:

This are the smaller ones:


What do you think is my best option:
The thicker bricks?
The thinner ones?
Do something with clay? (I think the clay I can get from my yard is good, maybe tomorrow will upload a small video showing this,I would like to know your opinion)
Or I may go with the two metal pipes? (I will upload the pipes photos tomorrow to)
I would love to know your opinion about the options, some pros and cons maybe!

Hello, my name is Juan (John), I' from Mar del Plata, a city in Argentina, in here we have a cold winter.
Me and my wife are moving soon to our new house and I am beginning to build a RMH and I have some questions that maybe some of you can answer.

First of all, I'm not an English speaker!! you will have to read with patience.

My first question, later I will upload some photos and more questions:

Here the fire bricks are expensive, I bought them anyway, buy now I wonder if a made a mistake (I can return them), maybe there is a cheaper ( and equally good or better) alternative?, I'm thinking about the heat riser, if I make it with to shit metal tubes and insulation between (perlite and clay) it would work the same? or perhaps with thinner fire bricks? here you can buy them, buy I was afraid that they where too thin (3/4 of an inch)

Thanks
Juan