Transformer data sheet: https://www.hammfg.com/files/parts/pdf/270DAZ.pdf?t=1697661948
My sim says that transformer RMS current is 128 mA for 100 mA DC load, which exceeds rating. Traditionally, center-tapped transformers have been rated for DC current, since that's how they're used, but Hammond says RMS, so we'll go with that. (elsewhere they say IRMS = IDC for this circuit - 1:1 ratio) Should certainly be fine at 80 mA DC or so.
And the transformer doesn't care about the input cap - RMS current goes up 1% as cap goes from 10 uF to 47. A tube rectifier will be happier with smaller value, though.
My sim says that transformer RMS current is 128 mA for 100 mA DC load, which exceeds rating. Traditionally, center-tapped transformers have been rated for DC current, since that's how they're used, but Hammond says RMS, so we'll go with that. (elsewhere they say IRMS = IDC for this circuit - 1:1 ratio) Should certainly be fine at 80 mA DC or so.
And the transformer doesn't care about the input cap - RMS current goes up 1% as cap goes from 10 uF to 47. A tube rectifier will be happier with smaller value, though.