rolling over the closing costs into the loan just means more payments to the banks in interest, best to minimize this if possible. better to save up for home improvements in the future.
30 year mortgages are for suckers unless you basically DON'T want to not make any money on the property in the long run anymore in the US. the "value" of the average home in the US appreciates at far less than the real inflation rate which is closer to 4.5% a year. unless your buying in a place say near the water, etc. where the value increases above the real inflation rate you really aren't making any money once you adjust everything for inflation, it's more of a hedge these days.
download this loan amortization excel sheet and check out the savings when you change from a 15, 20, 30 year loan. you save a lot in interest, odds are the mortgage interest deduction in the US will go away in the near future.
Amortization Schedule for Excel - CNET Download.com
just based on:
100k @ 3.6% x 30 years
163k total payments and 63k in interest at $454 a month
x 15 years and that drops to 130K total payments and 30K in interest a savings of $30k and you actually own your home in 15 years at $719 month