Load while connected to panel&controller

[Slavic381]

Newb question - just want to make sure I don't mess up.

Is it normal to run a load while the controller & panel are attached? I know nothing powerfull (like an inverter) should be connected to "load" terminals on the controller itself, but directly to the battery.

Can I run a webcam (6W max 5V), modem (5V 1A) & router (5V 0.6 to 1A) connected to the controller's 5V connection and bilge pumps & LED anchor light off the battery terminals and leave that connected like that? Also main power connection with a 12V DC fan & inverter connected to the battery terminals, but used on demand - when on board only.

Can I connect interior LED lights or navigation lights (if when upgraded to LED) to the controller's 12V connection? Do the controllers adjust the voltage to 12V (from 13.5 when alternator running or 10.5 when battery close to discharge) in order to prolong the life of the LED lighting? (The anchor light has that circuitry integrated)

Thanks!

PS I was looking to get this 10W combo for $50 (the router, webcam & modem would be on idle 90% of the time so much lower draw than the max in specs): amazon.com/Instapark®-Mono-crystalline-Solar-Charge-Controller/dp/B0038026Y2 (sorry I'm not alowed links Yet - cut&paste)