This Monday I took the time and installed all the electronics in Maja/Möwe and decided to try it out in the kitchen sink. Everything went well and all seems to work well. I still need to install something to secure the battery, but else wise I am ready join the deck to the hull.
Motor trials with a 2S LiPo indicate that Maja will be capable of going quite fast It should also be capable of handling 3S LiPo if 2S isn't enough.
Picture of kitchen sink water trial: