You can not time a cycle. You'll need to have a liquid test kit that measures NO2, NO3 and Ammonia; without testing it each day you will not know when its cycled; this can happen in 1 week or one month.
Hardy fish firs yes; Inverts farrr later they;re SUPER sensitive to any NO peaks and it will kill them; so only then add them when you know for sure your tank is cycled (readings permanent 0) and then a few weeks later
Yup they sure are cool, no question about this: But read the entire article you just posted here yourself
spc the Part that say's "Air"
Mollies, or any Livebearer for that matter have baby's more then bunnies do; which in a 10g will be overstocked & a sick tank in no time at all; and they're just too large fish to keep in there.
The only one popping into my head right now that'd be small with land parts for crabs in there are Norman's Lampeye aka Blue eyes here's a picture for reference http://www.seriouslyfish.com/images/..._normani_1.jpg
My internals make no noise at all (unless you REALLY press your ear on to the glass and you'll hear this lil humming)...Here's what I love for small tanks, good quality, fair price (The 2206 model) EHEIM aquaball Internal Filter - Filtration & Circulation - Fish - PetSmart
No these water filters will filter out EVERYTHING incl the things such as minerals you'd want in your tank!!! The only thing as far as water that is a must have, having a tank is a good water conditioner (for which I'd suggest "Prime")