WileyKyle,
First off the 622 does NOT support HD on both the TV#1 output and the TV#2 output. There are no Component outputs for TV#2. If you connect HDMI and Component cables to both HDTV's then you will be watching the same content on both Televisions, as the 622 can only output ONE HD feed at a time even if the receiver is in Dual Mode feeding two TV's. The second feed is SD only.
Can't say which extender to use but, Logitech does have a more expensive Harmony remote that does do UHF but only for connecting to the IR emitter that comes with it that particular Harmony remote so you can use to control equipment without line of sight from the Harmony remote to the area with the Controlled equipment.