ProTools M-Powered is identical to LE in every aspect except:
1) it is not available w/Ignition Pack bundle (which you probably don’t need)
2) it doesn’t support the Control24 control surface (there are others)
3) it doesn’t support the DVtoolkit option (not needed for radio production)
4) it doesn’t support DigiTranslator (used to import/export OMF files)
All other features should be the same, plus you have many more i/0 interfaces choices w/m-powered and are not limited to Digidesign’s pre-amps (you can get higher quality). And it comes w/an i-lok dongle included, which LE does not.
The Tascam FW-1082 does not appear on the supported hardware list (as does any Tascam product), but the NRV10 ($699) is a similar product if you absolutely need a controller + i/o interface.
Video without audio is just surveillance.