I got the parts now to start building.
To verify that the circuit will indeed run with half supply voltage,
i assembled it on a breadboard.
As to be expected with a high frequency circuit, the breadboard seems
to influence the oscillation (due to its high capacitance).
I have however been able to get a 1.6 MHz oscillation with a smaller cap
and the sine waveform looks nice, but seems a bit unstable (flickering,collapsing for a fraction of a second).
The buffer stage did not work as expected, that might be due to 1.6 MHz being too
high frequency maybe, that i don't know. There is only a very small voltage rectangular
waveform scoped at its output.
I could not locate a single 15nF capacitor, so i had to take 10nF, 4.7nF and 330 pF.
Next step would be to solder the circuit on a board, to see if it oscillates then.
Still a bit clueless on what power stage to use to amplify the current.
**broken link removed**