The weight savings between a 7″ and 9″ head unit is minimal…you also need to think about the case used as the smaller Large size case the Echomap 73 icekit typically comes with will not work with Livescope longterm (the zippers will eventually bust) The Livescope ice bundle comes with the XL case that has the Blackbox supports and mounting points and will fit the 9″ screen just fine. You’ll want to invest in at least an 18AH Lithium battery for Livescope, this will also result in the best weight savings, some guys who need the 20+ hour runtime go with a 30ah battery but it weighs alot more..
Any new Livescope released will come with a premium price for a few years, likely longer. The current used 1st gen Livescope setups will drop in price though…
I thought alot about waiting for Livescope 2.0, but I was able to piece together a premium 9″ Livescope setup for cheap as I didn’t want to pay the high price point the new 2.0 system will come with and Gen1 Livescope is good enough for me…