[brewer12345]

I thinkyou are about right. Of course, rates could go up in the next 18 months, so I would keep an eye on conforming mortgage rates and jump when you think its a good idea. A 15 year rate of 5% or less or a 30 year rate of 5.5% or less would probably be a reasonable time to jump. Just make sure you keep the necessary amountto cut the balance down to conforming in a relatively liquid account.