$250,000

10 yrs @ 4.5% = $60,915 interest paid, monthly payment $2,590.96

7 yrs @ 4% = $37,045 interest paid, monthly payment $3,417.20

30 yrs @ 4.65% = $214,074 interest paid, monthly payment $1,289.09

30 yrs @ 4.65% with monthly payment from 10 yr above = $63,683 interest paid, monthly payment $2,590.96

30 yrs @ 4.65% with monthly payment from 7 yr above = $44,554 interest paid, monthly payment $3,417.20

Looks like if you can afford the 7 year or 10 year, do that one (assuming no fees for closing the new loans). If not, making the extra payments on the 30 isn't a bad choice either.

Just run the numbers and decide.