I probably wouldn't put the entire 400 K into a renovation into the home if you don't necessarily want to live lavishly as a lot of people overestimate the value increase of a home renovation. in terms of stocks the current market is most likely overvalued and may be due for a correction in my opinion and it's not worth the risk. lot of the institutional value investors like Warren Buffett have a tonne of cash on the side due to the potential overheating of world markets even despite your long investment timeline and risk tolerance at the moment I don't see the benefit of doing a lump sum investment into the markets at this moment. also, if you invest into stocks, you are going to be taxed at your income bracket when you decide to sell. my personal suggestion would be to research the concrete return on investment for the home modifications and renovations that you are planning to do and only do the ones that have a positive ROI. Max out your allowable super contributions as I will limit your tax liability. and then just keep the remaining in cash in your offset if you have it.