There are some dandy really light weight tripods available. If you decide on the 12 powers, it will be like another dimension opens up once you tripod mount them. You will have issues hand holding them for long lengths of time. In order to get full benefit from them you need to spend time behind them.
I like Vortex product real well and think it is a value leader at every price point they are in.
The binocular I use most is a 6x32 Viper, now discontinued.