Should I be pulling out equity?

[Elisabeth Warren]

With my paid for condos and almost paid for single family rent dwelling I have about $350k in equity. In my primary dwelling I have about $500k equity. I am planning on pulling out $300 soon with primary dwelling refi. Should I be considering pulling as much cash equity out as I can during this period of low interest rates....and just holding it in interest baring IRA until real estate prices become more reasonable? I feel like I'm not taking full advantage of possibilities......any advice?