Congratulations.

First of all, I'd encourage you to do your best to keep your lifestyle as-is...at least for the short term. By that I mean keep your expenses as if you're still making 65k

There are 4 things I'd recommend:

• increase 401k dramatically. At least take the match, but if you put 22,500 into the 401k, that eats 2/3rds of the increase.
• Save for a house / other expenses
• Invest in a taxable investment account
• invest in an IRA.

The only problem I see with so much going into an IRA or 401k is that it's money that in all likelyhood you will not be able to access for 30+ years. Plan for that, in any case. Both are intended for retirement, so assume that's a hard and fast rule.

A taxable investment account is a great option. Yeah, you lose some to taxes, but you also aren't stuck with the governments rules around your age. Plan to keep any money you put into a taxable investment account for 5 years.

I'm assuming you're "average" in that eventually you'd like a spouse and kids. Most people like having a house for raising kids. But that's not a necessity (I actually lived most of my childhood in apartments). My Aunt is still single and has no kids in her 80s, so married and kids isn't for everybody. She still owns her Condo but has effectively moved into the home she inherited from my Grandmother.

Even if you don't want that life and don't want a house, a savings fund for future spending is a good idea...

Now...how you decide to allocate between those 4 above is up to you!