As Doug says, line of sight is unnecessary with an RF remote (although you will need to set up whatever IR emitter is included with the RF remote to pass the signals to your gear). You can also use an IR remote and set up an IR repeater system by locating an IR receiver at your TV and running a wire back to an IR distribution system in the rack.

I would recommend connecting your gear with the best possible video output (component if possible, s-video if you can't do component, composite if all else fails). Once you do that, just run component from the component monitor output of the 990 to your display. The 990 transcodes all composite and s-video signals to component, making composite and s-video monitor outputs unnecessary if your TV will accept a component input (as yours, being an HDTV, does). The on-screen menus are overlayed on top of s-video and composite video inputs and are displayed on a blue background in place of the input for component video sources, so you can get to the 990's menus from any source. The s-video and composite video inputs get an overlay "pop-up" showing volume, input or surround mode when things are changed; the overlayed information is introduced before the transcoding, so it works even when you are using the component outputs.

The DVI output does not get any onscreen information (menu or pop-ups), but since your TV doesn't support DVI you aren't worried about that.