Saw this sponsored ad next to your post and thought it ironic. seems like a deal if you don't want to DIY.
Super Chiller XL
My only problem w/ IC's is that unless your tap water is pretty damn cold, as in winter time in a cold climate, or your on well water. You usually need to ice bath or chill the incoming water to get down to pitching temps. Mid to low sixties IMO.
Perhaps out of laziness, all I have been doing lately is to put the hot kettle in a bath tub of cold tap water for about an hour, then I put the kettle in a large plastic keg tub w/ two batches of ice from my fridges icemaker. This usually gets me to pitching temps in about two hours. If it is late at night, I will just pitch the next morning.
Regarding aeration, w/ dry yeast I don't bother, for 5 gal. there is adequate cell count and o2 is not needed for reproduction.
If I am pitching a slurry from a previous batch, I merely sanitize a 2 qt. pitcher and "dip and pour" for a few minute untill the wort is all frothed up.
The level of gadgetry you want to persue is really up to you, IMO you can be succesfull and also keep it simple.