will eat your lunch. Always leave some cash (20K or 30K) in hand. Open an HELOC account if you need more money. Stock market is risky. But keep all cash in saving is even more risky because of inflation. Try to buy index fund or buy investment property when you accumulate enough as down payment. If you know and interested, you also can invest in art, gold, etc. or buy a small family business.
Remember, diversify can reduce risk.
When you invest in some area, do not forget hedge the risk.