An 80/20 mix of FXAIX and FSMAX would probably roughly approximate a total US market fund. FSNAX and FTIHX would be good international stock and US bond funds to round out a 3 fund portfolio.
Rolling over to an IRA would be a fine option too, particularly if you don't expect to need to make backdoor Roth contributions in the future (or have other substantial traditional IRA balances).