Quote from Cache Landing:
I could do a lot better for you if I knew what your current payments are and what your property tax is. Let's make a few assumptions since I don't know that much about you.
Assumptions:
-you can probably make 10% annually on your trading capital.
-any debt you are trying to consolidate is around 9%.
-your current house payment is about $2K month
You can actually refi with a great rate for about $350K with most lending institutions. A second mortgage isn't going to get you a better combined rate because you first mortgage rate isn't lower than current rates. And your situation is good enough that you don't need to combine two mortgages for any reason.
A refi right now isn't going to get you a better rate than you currently have. It might however increase your cash flow. I always encourage people to run their personal finances like a business. Cash flow is much more important than debt.
If my assumptions on your mortgage payment were close to correct, it is likely that using home equity to consolidate your debt will result in better cash flow. The beauty of real estate is that the banks allow you to use the equity without forgoing the appreciation, provided that you pay them interest. If the interest is lower than the appreciation then you're making money automatically. That might not be the case this year, but as long as the mortgage rate doesn't out pace your home's appreciation by more than the current student loan rate, then you're better off using home equity to finance you kids' school.
Now that we solved the school issue, we can turn to the increased discretionary funds. We assumed you'd be able to make at least 10% on those funds which will beat the refi rate by about 4%.
All this and your cash flow didn't change at all. You aren't in dangerous territory in terms of your house, because you still have 30% equity as a cushion.
Obviously this is all based on assumptions and could be much more accurate, but the point in the end is that if I were you I would refi now for $350,000 and not wait for rates to fall any further.
If you want to provide more specific information I would be happy to provide more specific advice. But I'd need to know what your personal financial goals are, as well as your investing abilities.