I'm somewhat in this situation, myself. My income has doubled in the past year due to some business success, and my wife and I have reduced our lifestyle expenditures to focus on early retirement. Our savings rate is around 50%, but that is after adding in paying for all college costs out of pocket this year. Our FIRE date is now set for June, 2020.
One principle to understand about index investing, is that it scales up no matter how much one person can throw at it. Having more money available doesn't change the efficiency of index investing. It just makes your accumulation phase shorter.
You should take a few, simple steps:
1. Articulate an exit strategy for your business. For me, it's working another five years until my primary contract ends. At that point, if the contract extends (high likelihood), I'll either sell the business or replace my active involvement with an employee and just enjoy the passive income. Are there triggers/decision points which could affect your exit? Write them down and develop contingency plans for these eventualities.
2. Aggressively minimize taxes. With high income earnings come painful marginal tax rates. Look at how your corp is structured, maximize tax deferred earnings as much as possible (I use a solo 401k and Roth conversions).
3. Figure out what makes you happy. Some folks want nothing more than to continue an entrepreneurial lifestyle, starting and selling businesses every couple of years. Some folks want to keep expenses super-low so they can retire earlier than they could otherwise. I'm planning to retire to a lower cost of living place with some land, establish a homestead and enjoy some gardening, homebrewing and livestock.
If you haven't yet, read "Your Money or Your Life" for some good exercises on how to figure out what's important to you. Spoiler: it's probably not "more stuff."
4. Based on what makes you happy, develop a retirement plan to finance your goals. If you only need 30k in retirement, then your 25x goal is just 750k. Maybe you already have enough? This may change your perspective on step 1. You can live a very comfortable lifestyle on $50k - $75k a year. More than that is not likely to make you happier. You can permanently set yourself up for a 75k retirement with a nest egg of $1.875m. Think about putting that much together into an asset allocation that you're comfortable with, and setting it aside.
As far as a house is concerned - would owning a house make you happy? There are a lot of headaches that come with real estate ownership, so buying really depends on what you want to do with your life and how long you plan to be wherever you are. Good luck! Let us know how it works out for you.