Fender preamp with double LFO

I'm designing a fender based preamp and want to use both types of tremolo found in the amps but don't want to use a tube in each lfo so I had the idea to combine both circuits into one and be able to switch with a 3pdt switch

How viable is it to do this sort of thing? I made the change from one to the other on the breadboard and it works but I don't know if it works the same on a pcb with a switch or it may have a failure with time of use
Another question that I have is how can I implement the modulation of the second lfo in a vibrochamp circuit?

so far this is the entire circuit, I would like to know what I am doing right and what I am doing wrong