do you accept loan with USD in BTC ?

example btc price now $320
i borrow $1000= 3.125 btc with interest 5%
and at the end btc price $200
i'll pay $1000 = 5 btc +interest $50 = 0.25 btc= 5.25 btc

if btc price $500
i'll pay $1000 =2 btc +interest $50=0.1 btc= 2.1 btc

and can i borrow above $1000 ?
thank you