Generally good advice, but I would like to add a couple notes.
For retirement contirbutions, there are income limits to a Roth IRA. If you make over a certain amount you may not be eligible to contribute. You can also contribute more to a 401k (currently $16,500) than you can to any IRA (currently $5,500).
Your situation sounds awesome, in that you have all guanenteed income sources to secure your retirement. That gives you a lot of flexibility for your investments. I know you really love dividends, but I would still say in general that if you are growing your portfolio you want to be a little more diversified than just buying dividend paying stocks. If you are taking income from your portfolio, while dividends should be a part of that, they are still stocks are are prone to shocks and it is a good idea to look at fixed income sources (bonds) as well to lower the risk and possibly increase yield and guarentees to your monthly income.