Can someone verify my EL wire oscillator?
This is fairly close to your concept. D1, D2 and the ground symbol are only there to allow it to simulate (don't put them in the real circuit). SW1 is also there for simulation (to make the oscillator start) but it could be your SPST control switch- closed power triac 1 only is 'on' and open is for oscillation. I've shown a 6V supply to keep the reverse Vbe on the transistors acceptable. 







simulate this circuit &ndash; Schematic created using CircuitLab

This circuit (with 470 ohm resistors) puts about 10mA through the triac gates, so you need to pick triacs that will reliably trigger with 10mA in quadrants II and III (IV is the hard one, and we're not using it). 

C1 and C2 can be aluminum electrolytic capacitors rated at 25V or higher. 

The main problem with your circuit is insufficient gate current for the triacs, also the time constant is too short for the times you said you wanted, and the 40K resistors are a little high for the required base current.