What are your trading fees? If low (e.g., zero), then no need to wait for a dip. Just start putting in money monthly, over the next 6-12 months, until it is all in. If a big dip happens, top up with a lump sum, but not everything. Decide now what you think a big dip will look like.
Others will suggest a balanced mix of funds, but you should not need more than 3 index funds, to keep it simple.
Your choice on bonds, but I tend to be more aggressive with money I don't intend to draw upon for at least 10 years, especially while I am still working and can make back any severe losses with simple life choices while I am younger. Again, this is true if the only bad thing that will happen to you if 50% of your money was suddenly lost, is that you have to work until you are 50 instead of 44.