Delta-V Requirements for a Vall mission?

[Crazy Inventor]

I already have a lander that is capable of landing on Vall and returning to orbit to dock with the mothership. I don't plan on doing any Tylo gravity assists, as this is my first Jool mission, although it is an option.

[Leganeski]

Without any gravity assists, the cheapest route is a direct transfer from Kerbin to Vall and back.

After reaching LKO, the ejection to Jool costs 1920 m/s, and the injection at Vall costs 980 m/s, for a total of 2900 m/s. After landing and rejoining the mothership, the ejection back to Kerbin costs another 980 m/s.

If you have a more capable lander, you could theoretically save 260 m/s in each direction by parking the mothership in an elliptical Vall orbit, which would reduce the total Δv requirement of the mothership from 3880 m/s to 3360 m/s.