well ur updates would still show up but if u sign out of the browser then when u click the widget it won't be sign it.

don't worry dude ur questions aren't silly at all if ur worry about battery life, i email mugen power and they say their working on one right now that is the same size as the orginal battery.

but since u not planning on using a data plan ur bettery wonamt die as fast on wifi

Thats the old Ni-Cd batteries that need to be drained. The New Lithium batteries does not need this, Accually they should not be drained completly, but the phone powers off before that happens. So charge it anyway you like, but it is better to charge it before it is drained.