Just want to run this one buy you framers:

On a single story room addition I am opening up an outside bearing wall to install 11' of windows. I already have the ceiling supported with a temporary wall and the header is in place awaiting nailing. Windows will be mulled together, no studs between them. I am using a 4 x 12 glue lam header which is rated for the 11' opening. The header is set up against the top plate (no cripple studs). I am using a 4x4 post under each end of the header, and 3 king studs at each end. My question is how to properly secure the header to the top plate since I have no room above in the attic. I could nail framing anchors to tie the header/top plate seam, but how many? I could also toe-nail 16D nails through header into top plate, but what spacing? I'd appreciate any comments on the overall setup. Area is Austin Texas.

Would a header hanger work in your project?

HH Header Hangers

A hangar would work on the ends, but I am trying to attach the middle span to the top plate. The ends will be nailed through the king stud into the header.