*First of all, this really belongs in the Welcome Committee Forum. I'll move it there now*.
As for the other points:-
a) Well, you could save yourself some trouble and have the grassfed meats delivered to your door. I know some farms sometimes have reduced delivery costs if the target address is within <20 miles of a farm.
The storage of 1 whole, raw lamb is either going to have to be done via getting the farmer to cut it all up beforehand into smaller slices and then dehydrating it, or by cutting it up and then freezing it. IMO, I view dehydration as actually a bit worse than freezing as that lowers water-content of the meats. Plus, freezing doesn't do that much damage. It doesn't kill off the bacteria, just slowing them down temporarily inactivating them. Freezing does rupture the cell-membranes so it is always a good idea to eat the raw meat as soon as it's thawed as otherwise nutrients are lost - sticking it back in to refreeze is not a good idea, which is why lots of separate meat-cuts should be frozen, rather than 1 whole large carcass at once.
b) I would strongly advise against eating "high-meats" when you are sharing with others. It really offends people big time.
If you are near the country, it might be possible to store some "high-meats" in the outdoors underground. Otherwise, wait until you have a flat of your own or have some little-used cellar/basement below your flats, where you can secretly store such high-meat. I use concentrated toothpaste of some sort and soap, so issues re "high-meat" or fresh, raw meat or whatever don't come up.
c) No idea re lacto-fermenting fruit/veg, as I have never felt the need. But it sounds like someone should make a sticky topic re the subject.