What has any of what you just wrote got to do with:
"its not untill the debt is reduced to half of the current value of the house you break even with rent"
Again...what has the current value of the house got to do with a rental income vs debt repayment ratio? Are debt repayments based on how much you borrowed, or what the current value of the house is? It sounds like you think the latter.
You, again:
if the rent doubled, the property price would have doubled to, so still 4%
Me, again:
What has the current value of the house got to do with a rental income vs debt repayment ratio? Are debt repayments based on how much you borrowed, or what the current value of the house is? It sounds like you think the latter.