It sounds like your funds will want to be in capital preservation mode while you are saving up for the house in the next 3-5 years. If it were for a long term investment, then placing them in higher volatility investments, such as stocks, would be okay. While there will be ups and down, the investments trend upwards in the long run.
Short term, however, investments can see a lot of ups and downs, so it is not possible to know where your investments could be in the short term.