$185,000 w/ an 80/20
$148,000 on the 1st and $37,000 on the 2nd
$925 on the 1st @ 7.5% for 40 yrs (2/38) and $409.29 on the 2nd @ 13% for 30 due in 15. This is a high worst case scenario.... plus you'd have the impounds for taxes and insurance.. not sure how much and if they have Property Taxes in Texas.
Closing costs w/ 1% origination around $5500-$6000 depending on the title fees and other costs on their end. Could be a lil higher or lower