Is #98 running in October? It has been suspended since April or May.
Otherwise, it will be the Silver Star #92 - due in FLL at 12:18 pm and your connection in Savannah to the Palmetto #90 will be in the middle of the night for #92 [01:30] to #90 at 07:45 am to Charleston. This is just a warning. Only #91 [So] and 92 [No] have been running for the last few months - and they go the inland route to Columbia SC.
I would recheck with Amtrak to see if Silver Meteor #98 [your early morning departure 08:50-ish] is confirmed as restarting operations yet.
This is just a heads-up.