family of 4 we had a 60 and 45 when we had a trailer the 60 was the fridge in trailer and 45 was freezer in vehicle
was a nice combo
and when we had shorter trips we could leave the 45 at home and just use the 60 in the trailer as a fridge
or use the 45 in the vehicle for day trips and over night runs etc..
we did some two week runs with that combo restocking a few things like milk part way through and did fine but used every bit of both
we sold the trailer and 60 fridge with it as we cut back on gear but if I was to do it again I would be buying the 80 this time around over the 60
but as far as space for us we can go 4-5 days with our 45 but that is about it unless we started to rethink our menus
but I can say after even 4 days our frozen stuff is still almost frozen solid only some thaw on the outer edges as we keep the temp right down to min of freezing as mentioned above
for packing we vacuum pack and lay on a sheet pan to freeze flat and then stack them in vertically so easy to see whats written on the end and grab it out quickly
all frozen on one side fridge on the other packed in by used first closest to fridge side
as far as size to go out longer than 5 days we bring a cooler on top of our 45
keep debating use the 45 as a freezer and have some water jugs or the blue ice kinda stuff to rotate in and out of a good cooler for longer trips instead of doing the freezer and the fridge kinda thing again ? not sure it would work but might
