I was at Benning August-November in '89 for OSUT. It was hotter than the fires of hell in the beginning and in November during our FTX just before graduation it actually snowed.
I honestly don't remember mosquitoes being a concern. The Drill SGTs were my only real concern...
I think the Military Operations in an Urbanized Terrain was my favourite part. If you end up with the 1st/329th I might see you down there... Seems that the unit I just joined is deployed down there right now.