the science is a bit much, i think - you can save more than 9km/s of Δv by aerobraking, though it's quite risky since you're entering at over 10km/s. so the actual Δv requirement to get from LKO to helvica orbit is probably closer to around 1.4km/s, which is pretty reasonable - in between duna and dres. it is still harder since you need to bring multiple heatshields to survive the aerobrake manoeuvre, but it's not that bad either.
i haven't found any other issues, besides neus nadavo's sky being weirdly bright, but that's about it. there isn't anything that's seriously a problem.
anyway, it's a neat planet, and the other 2 moons sound like they'll be cool too, so i'm excited to see them!