Actually I have tried dog food, tastes a bit like the content of some meat pies, mainly roo meat. Have also tried cat food which is quite nice.
But anyway you are one lucky person to have so much produce to use, shame that I live in the south east. You need to find out how concentrated you juices are but it will only affect the concentration of the flavour.
It is a trade off, the more fruit the less sugar required the more flavour. The less fruit the more sugar required the less the flavour.
You can produce the same strength ABV drink either way.