Hi Missmoneymachine. Welcome, and good job starting an account!
The only real difference between ETFs and index-tracking mutual funds is how you buy and sell them. So pay more attention to the expense ratios and what index the funds track.
The most important thing you can do at this point is to learn about asset allocation so that you can find the portfolio and investment style that's best for you personally. Nobody here can make that call for you -- it's an individual decision that depends on your own personality and needs. Two references that I recommend are the
JLCollins Stock Series (that will give you a thorough primer on general stock investing) and
PortfolioCharts.com (that will give you visibility into many different popular lazy portfolios as well as help you find index funds to fill out your portfolio). I'm sure others here have other good resources to recommend as well.
In the meantime, starting with a total stock market index fund is a great idea. Don't worry about admiral vs. investor shares -- I believe they automatically upgrade you when you hit the minimum. A total stock market fund will likely be part of any other larger strategy you eventually choose, so think of it as buying the first building block.
BTW, I personally wouldn't bet so heavily on the condos, especially if you haven't done it before. If that truly interests you, perhaps you could start with one and use the rest of your money to build up more traditional investments first.
Hope that helps.