Well......First I'd build my own house,across between a Bond villian's gaff(Sharks included) and a Frank Lloyd Wright house.Have a dedicated power plant in the woods.It would be on an island to with a no fly zone.
I would have a number of systems.I would like to experiment with valve gear for starters.As for keeping your existing set-up.I would keep it.I've worked to hard and too long to just discard it.
I would squander the rest on fast women and fast cars.
Well Tempered Versalex, Ortofon Cadenza Black, Trilogy 906, MCRU LDA Linear PSU, Naim ND5 XS 2 , Exposure 3010S2D, Roksan TR-5 speakers, Spotfire Interconnects/Spotfire Reference speaker cable