building Screw in solidworks

hello,

we will be happy to get some help.

we are building a Dibble drill in our project at the B.G university.

in this project we decided to build screw that Integrate a dibble with drill bit.

what is the best way to assemble this tow parts? can we build it in one part?

what is the best material for this product?

how can we do analysis for the screw withe the ring above it?

SolidworksDrawings And Detailing