I did a range of pmts for you, basically for every $10,000 financed, add $75ish of total pmt right now incl pmt, taxes and insur.
I am a big believer in watching/keeping debt under control (Dave Ramsey influence although I do march to my own version) If your folks are cool with you doing stuff at their place for a while, I would rent something CHEAP to give you guys time to build up as much cash as possible for downpmt.
You might also end up finding a piece of land to buy / build what you guys really want on it instead of compromising... (big uber pluses here with the wife I can assure you) The deal is you get the "garagmahal" and she gets the house, and by waiting until you have the cash / find the perfect land / etc you probably will end up living there 10+ years if not "forever"
So I hope this helps...and grats dude on the upcoming nuptials!
Sam
Fin Amt Pmt Prop Tax Insur Tot Pmt
140,000.00 884.90 140.00 50.00 1,074.90
130,000.00 821.69 130.00 50.00 1,001.69
120,000.00 758.48 120.00 50.00 928.48
110,000.00 695.27 110.00 50.00 855.27
100,000.00 632.07 100.00 50.00 782.07
90,000.00 568.86 90.00 50.00 708.86
80,000.00 505.65 80.00 50.00 635.65
70,000.00 442.45 70.00 50.00 562.45
60,000.00 379.24 60.00 50.00 489.24
50,000.00 316.03 50.00 50.00 416.03