LMT lower and SDI midlenght upper

I’m thinking about to assemble a LMT lower with a SDI midlenght upper (just because LMT does not have midlenght upper otherwise it would be simplier to have a complete midlenght LMT rifle ).
Is there a good combination?

thank for your answers.

They’ll lock right onto each other. What are your concerns?

Would be a sound setup as far as I’m concerned.

Excellent choice of components.

If you want a mid-length LMT, they DO offer them, but only in the MRP system.