Getting credit

[Andrew B.]

I worked construction last season until October, Make about 6 grand a month GROSS, now Im going back to it this summer for 6 months then I am going to work on the oil rigs in the winter months,

If all goes well I will have made over 110K gross in the next year..

My question is I have no credit, Can I gain enough credit in the next year and only have worked with my company for one year to obtain a mortgage? I just got a credit card and using it once or twice a month and I am taking out a loan for 1500 dollars and paying it back monthly just to gain credit I want to put about 35-40 thousand downpayment.. On about a 260 thousand dollar home..