Yup if you want and the second question is not a problem.  Landing any way you can is fine as long as the craft is intact and theoretically reusable. Water landings are OK but cutting the parachute mid flight for example would not be, since if it is cut it would not be possible to repack it  so technically the chute is lost. Chutes disappearing of their own accord on zero velocity is OK because you can still repack them if required. Utility mods are also OK. Mods are OK as long as they
    • Like
    2