At the risk of putting a downer on the idea, I rather doubt it'll work that well. It'll also involved a fair bit of investment just to try it out unless you already have the bits. Quality panniers aren't cheap, and neither is a decent front rack.
Back in the day I had a non-touring bike, admittedly it was nothing special, just a mid grade 10 speed "racer" as we called them, but with a pannier rack and heavy panniers the rear triangle would flex quite badly. Whilst it was usable it wasn't at all nice to ride. My later Thorn proper tourer was rock solid when loaded. Whilst I've admittedly not tried front panniers I'd expect a rather worse result trying them on a fork not designed to take them.
Isn't there any way you can avoid using front panniers such as a combination of handlebar bag, saddle bag, strapping stuff to the top of the pannier rack, overloading the rear panniers slightly, or maybe some kind of luggage on the crossbar - or even by doing without some stuff. I have carried all my caving gear, sleeping bag, food etc just on rear panniers on the aforementioned 10 speed and I'd really not want to cycle any distance with more weight than that. My two lamps were 6lb each back then! Thankfully modern LED lights are a tiny fraction of that these days