My ponds are not designed that way. But I use blocking nets to do some of the same things. My efforts were not on a new pond so I am not adding LMB behind the forage net except to habituate them when stocked.

Water temps change slowly. If you have checked locally and have not seen or heard of tilapia die-offs in your area you should be ok. The Fla LMB will be ok as will the TShad.

The nature of your question was for ideas. If I was in the position you described I would try what I explained. That does not necessarily mean it is the right choice for you. My best advice is to learn as much as possible and start by contacting Bob or Todd or one of the other Fisheries Scientists hear and ask them for advice (including what I suggested). They could design a plan for your specific pond with your goals and within your intended work parameters. Better yet sign up for the PB convention next week and get a crash course and meet the people.