<human>: So my mortgage is coming up for renewal in the next couple of months, and my broker asked if I would like to roll our line of credit into the mortgage and refinance it at the time, I'm just not sure if I'm going to end up paying more over the long haul for it or not.

Relevant info:  We took the mortgage out for 286,000 5 years ago on a 35 year amortization at 4.29%, so this renewal has 30 years left.  We were paying 1328 monthly for the mortgage which included a $16 charge for a homeowners insurance policy.  The new rate we're being offered is 2.89% for a 5 year fixed, and I'd like to decrease the term to 25 years left and keep the payments the same as they are now.  

Line of credit is at 15,000 at 4.5% unsecured, we took it out last year for a few home renovations after our second child arrived.

Summarize the given text in a few sentences.
<bot>: is it worth it to refinance the mortgage to clear the line of credit, or better to keep it and pay it out separately?