Investing in Non registered to fund RRSP

I came into some money after the passing of my mother. I have maxed my tfsa, put 20k in RRSP, spent 50k in home Reno leaving me with approx 160k. I’d like to keep 70k reserve cash and 15k to give my kids to start their own tfsa. My question for you is best way to utilize the rest to be able to fund RRSP and tfsa going forward?