Linear Audio HV Time Delay / Soft Start and Speaker Turn-On Delay and DC protection

[Tubenstein]

Hello!
Is the Soft Start Board and one Speaker Turn-On Delay and DC protector board suitable for the output section of this hybrid circuit, and Linear Audio THV Time Delay for the driver section?

Soft Start & Speaker Turn-On Delay / DC Protector Combo – diyAudio Store

Linear Audio High-voltage Delay for Tube Amplifiers V4 – diyAudio Store

What is the power transformer requirement for both?

Thanks!