ok ill try and help.
we have a 8 week old english mastiff. we have organised the back yard so she wont escape for a puppy adventure and catch something orrible.
1. your back yard should be fine as long as other dogs dont come in normaly,,,,they can catch parvo from sniffing where dogs piss and poop normaly,,,ie outside your yard.
2. 2 weeks is a long time to take off, she'll , he will be dependant on someone been with her 24/7.
we leave tallulah bloo most days for a few hours, she has a area in the house thats fenced off ( garden trellace, it folds up nicly ) and she stays there, just tire her out before you go out sio she sleeps.
serious your pups a gaurd dog by nature so she'll love the responsability.
we have bought the book ( PUPPIES FOR DUMMIES) just like the windows for dummies book, it realy good loads of tips.