Yes, the back turrets are mounted directly on the sage thrusters. I wanted to keep the original shape of the ship but didn't find much better turrets that could be mounted better. I know it's a sort of drawback.

When it comes to planetery entry/exit I haven't thought that much of the hydrogen thrusters as it came out not long ago. But it might be a project not to far on from now adding these. It will require some re-fitting of thrusters and conveyor systems but I will sure keep it in mind to try it out later, as an example it might also change back turrets mounting abilities. Now I will probably test some other projects and also test the new thrusters systems abilities.

Are those rear turrets mounted direct to the sage thruster?

The detailing is superb, i long for furnature to be added as stock.

Since this is a lander are you working on adding hydrogen thrusters for planet entry?