Hello Colorado,
To obtain a mortgage on income outside the state, that banks will allow a mortgage of 75% of the value of the property, however say you chose a property that is not ready till next year, you could get loan approval based on 75%, and if you are home before the cheque issued you could resubmit your case based on a higher amount. Some of the banks here would take your USA income into account for assessment, and you could qualify for 100% finance, if you are a first time buyer.
I hope this helps,
Best of Luck