1. 1m square per rabbit minimum. For a flemish giant your looking at about 2.5m
2. Raised floors are better as they're warmer and protect from flooding etc. Roof needs to be waterproof if they're living outside. Good ventilation is a must. And there must be enough room foor them to have seperate living, sleeping, feeding and toileting areas
3. NZ rabbit fancy is the best for those kinds of rabbits. Trademe has a few as well but don't buy unless the conditions the rabbits are kept in is super clean. Animates can get rabbits such as rex, dutch, dwarf and minilops
4. In general the larger the breed the more docile. However the same is true of lop ears - they're way more chillaxed and much more human oriented.
If you keep just the one rabbit, he'll be much more bonded to you, however you'll need plenty of time to spend with him. Two rabbits will bond more to each other and will keep each other warm/company but won't be as cuddly towards you.
Bunnys diet consists of 50% hay, 30% high quality pellets and 20% fresh fruit and vege. Salt licks, and mineral and wooden chews are also needed as bunny teeth never stop growing.
Hope that helps! :happy2: