Do you find yourself hindered by weight restrictions?
Do you constantly over build station modules?
Well this is the booster for you. The Gargantuan booster is 20,000kn of thrust you want under your heavy payloads. This booster has been personally tested with a 81t payload to 215km Kerban orbit with a transfer back to 100km and it still had Dv to spare!
Total atmospheric dv is a whopping 6650m/s with an 81t payload and will suite your heavy lift needs.
The upper stage is also controllable after delivery of your payload and can be deorbited to remove space junk from your station area.
Hotkey 1 is assigned to the solar panels on the upper stage.
Mechjeb has been used with this Booster as lag maybe an issue for some at the early stages.