49 y.o. has 460k in 401k, 115k vested portable pension, 100k tree farm, 65k ROTH, ~200k in brokerage/metals/hard assets, paid off home worth ~180k, wife 401k=~40k. No debt to speak of. Daughter to start college this Spring, son started HS this Fall. Can I do it at 55? I would like to walk at...