Hi, I'm new here, new to Garmin GPS, and new to kayaking. I am researching a Garmin handheld to purchase for kayaking in Sarasota Bay (Florida). I could use some advice and information from anyone who is willing.

I've provided some background info on my intended use, then I've listed my questions, below. Any help you can provide is much appreciated!
My use is specifically to help me find my way to various islands and points of interest in the Sarasota Bay, and then to be able to find my way back to my launch point.
I don't believe I'll need things like depth of water (I can see where it's shallow!), channel marker info, etc., that would normally be on the BlueWater charts, but I DO want to see islands by name, canals by name, bridges by name, and other features.
I also need to be able to clearly see where I am, the direction I'm heading, where my launch site is in relation to where I am, to be able to see if I'm on course for my destination and, if not, how to get back on course. I am NOT a good map reader and, as my son likes to say, I can get lost just getting out of my car!
So, after that long intro, my questions are:
1) Will a topo map provide the information I described and need to find my way around Sarasota Bay?
2) Is there anyplace on this site where I can see an example of the information on the topo map for Sarasota Bay? If not, for any large body of water with islands, bridges, etc.?
2) Do you think I need the BlueWater chart?
3) Do Garmin GPS screens (models under consideration listed in 4) below) systems REALLY work in bright sunlight?
4) Does anyone have recommendations for GPS systems that will meet my needs? I've been researching and have, so far, liked the ETrex 25 or 35 (both touch-screen) as well as the Oregon 600 (also touch screen).
Thank you!
Sara-Bay