I spent some time doing more research.. still have some questions despite this:
I've kinda decided that the cams on rangevideo.com are pretty good based on comments:
I was going to go with either the KX-131
http://www.rangevideo.com/131_cased.html or Kx-151 (480 lines resolution)
http://www.rangevideo.com/151_cased.html ; They appear to weight 1.16 oz without the battery..
Transmitter wise.. I've decided to give 900mhz a shot:
http://www.rangevideo.com/900mhz_100mw.html 900mhz 100mW $54 and matching receiver
http://www.rangevideo.com/900mhz_receivers.html 240mA power, 0.9 ghz, channel $65
Most comments say to go for 900mhz. I'm assuming the 100mW will get me at least 1000 feet, which should be plenty for flying a Zagi I'm assuming? (What is the range on not needing a HAM licensing to fly.. up to 1mile or 500 mW?)
Still confused on what type of battery is the lightest for them.. I'm assuming the LiPo's are the lightest.. but which model would be the right one: ie: Something like this
http://secure.hobbyzone.com/catalog/.../EFLB1035.html ? (this weighs 5.2oz).. would this same LiPo battery work for the receiver unit as well?
Added up these parts, using the stock antenna come to around $200 bucs plus shipping..
I guess I could go for the lesser quality CMOS Boostervision setup ($124 total) if I just want to throw something together and test it, but I think the extra $100 isnt bad.. if this is the right combination for what I'm doing.
Cheers