Fender rhodes style stereo tremolo/ preamp tone section

[57champ]

Hello this is my first post on this forum, I've done quite a bit of pedal modding and worked with vintage gear but am still new to from scratch pedal design (I know how stuff works but ask me to design a circuit and I have no idea what values to use for components), I'm still working off of schematics and kits. Anyways,  what I want to do is build a stereo tremolo pedal that works like the pre amp in my rhodes piano, It would be all solid state run on 12 volts and contain a tone section a boost section, and a stereo tremolo that uses incandescent bulbs and ldrs or some other means to modify the signal. Oh and I'm thinking about building a drive circuit for a reverb tank I have sitting around into it to. Any ideas where to start? or good info on how to design this?