Michel Lamontagne from Canada has been doing some fantastic work on providing artwork of the launch and landing sequence. Here's some preliminary artwork to whet your appetite.
Another option you could get a large cargo lander by adding legs to the EUS like this proposal with the S-IVB.https://www.wired.com/2012/11/skylab-on-the-moon-1966/
The uncrasher stage can have very low dry mass as there is no need for redundant systems. If there is propulsion failure on descent, lander separates and returns EML1. This allows a single BE3 to be used while Xeus needs redundant engines.