I fish at night, and havent been much this year. It has been a month already since my last trip. I can usually catch 'em up into August. Weed lines next to deep water, and the creek and river channel ledges are what I fish. Sounds like you already have a good plan. I don't know if Roseberry has been sprayed for weeds yet. I would avoid that area if it has been, you will see docks and boat houses posted if it has been sprayed. Also the Preston Island area may have serious snags from a Tornado that went through there several weeks ago.
Have you fished Normandy lately ? I love that little lake. Haven't fished it for 4 years now I quess. Time flies. Good Luck