Things are going well,
I have ported my Arduino code to Raspberry Pi, it seems as good step. It is of course much faster even it is written in Python language now.
Any change can be done in few seconds.
Data processing from IR thermometer is working really well over USB. Thankfully my IR is able to power from the USB port so battery is not necessary at all there.
Today I will try to make new kanthal A1 heater. SiC element is on the way but it will take approx. 3 weeks.
All in all, SiC elements are quite expensive - approx $180 for one.