Hey J - well I'm no expert but three items jump out to me but depend on your wants / desires / needs:
1. If y'all are worried about some financial goal (e.g. college savings for the kids) you may want to ear-mark this money for a particular purpose (e.g. I'm not a fan of the 529-type plans, but I mean if y'all have plans to save for college for the kids and just haven't started then this money may be great for investing for the purposes of college funds).
2. I note y'all are heavily invested in retirement accounts. Outside of your home, it doesn't look like you have any money in after-tax investments. If y'all have machinations on early retirement, you would need to have money from a source that is not an IRA/401(k). It may be that your house can help provide that, but I'd hope for y'all that this isn't the only source.
3. I'd recommend something like a Vanguard index fund. If you are undecided on what to invest in, I'd lean towards stocks myself using either an S&P500 mutual fund (or ETF) or a value index fund. The S&P500 is at an all-time high, with most metrics indicating it is very expensive to buy. However, you are 37 and don't have to have the perfect investment right now. A bird in the hand as they say. With these guys, you would incur some taxes on dividends. However, since they are at historical lows it wouldn't cost you much.
