@Jennifer Ozuna From what I understand you are looking to get money out from the existing rental property. I don't see how that's going to work. As others have stated, you're pretty much at 25% equity. Even if you find a lender that will go lower, i.e. higher LTV, (doubtful at reasonable rates) you probably do not want to do that - overleveraging at this point in time is not a good idea! Don't you see what you did in 2004? Yes, you overpaid (albeit unknowingly) and therefore, factually, overleveraged. Just look where that got you over the last decade. Sorry to point it out but it's a fact.
Just be happy that you now own a rental property which - even with a comparatively expensive ARM - seems to cash flow positively. Don't jeopardize that in this market.
As for reducing the monthly payments: it's all about running the numbers. A 30 mortgage is going to be much more expensive than, say, a 5/1 ARM when comparing current rates. Then again, it might be cheaper than what you currently pay for your old ARM. Only you can know that by looking at the figures involved.
In any case, don't try forcing the purchase of another property by whichever means necessary. The market is toppish, i.e. expensive, and you probalby do not want to repeat "your 2004"...