So just to be clear, we're talking electric dryer here, right?
In our old house, we had an electric dryer in the basement. We'd vent it outside in summer, but in winter, we just disconnected the hose through the wall and turned it 90 degrees back into the basement next to the dryer. Then we'd hang a pair of pantyhose onto the tube, then a second pair over that. It was kind of funny, because when the dryer would come on, the legs would puff out and there's half a woman hanging from the ceiling! :laughing: Anyhow, even with a doubled up panty hose, it ended up putting a gosh awful amount of dust into the basement. But the moisture was great to have in the very dry winter.
With you being down south that far, I doubt you get that dry of air in your house. Do you really want to add moisture into the house? It would be best to run the vent UP, through the ceiling into the attic and then through the roof with a proper dryer vent, over to the nearest exterior wall and out through the soffit. However, if the soffit is perforated near the vent, the steam can rise back up into the soffit and attic area, causing moisture problems (in the south, read that as MOLD), so be careful.