New ceiling in Minnesota?

All, I am removing a load bearing wall between my kitchen and living room that is roughly 11.5' long. The beam I need to have has to be roughly 24' long. I need it to reach from part of the existing wall that will stay, all the way to the next load bearing wall (which happens to be my garage wall). From that garage wall to the wall I am removing there is no wall, it spans roughly 11'ish, then there the 11.5' section of wall I am removing, and that same wall continues to make the hallway. *Attached is a diagram, hope it helps* My plan was to use an LVL beam up in the attic. I was going to set (1) end on the load bearing garage wall for support and run the other end all the way to the portion of the load bearing wall that will still stand. That way each end would have support to rest on. I was going to then attach the LVL beam using hurricane straps, on every ceiling joist, on each side of the LVL beam. The beam would then be hidden in the attic and provided the needed support for the wall that will be removed. Problem is, I do not think I will be able to get a 24' beam up into my attic. My question is, can I buy lets say (2) 12' LVL beams and attach them together to make (1) 24' LVL beam. If so, how would one attach them together? If this cant be done, can I go with my original plan but use only a 14' LVL beam. One end would be supported on the section of wall that will stay and they other will run toward the garage wall and end on a ceiling joist? If not, what is the best way to go about adding the extra support? **I have already spoken to a contractor who thought I would be just fine in removing the wall with the way my roof & ceiling are built up in the attic. The wall runs perpendicular to the ceiling joists. Me being cautious, I'd like to stick a beam up there.**

Hey guys, Had a question about my ceiling but let me give you some background to it. We are removing a load bearing wall that separates the living room and hall way (sanded plaster finish ceiling) and the kitchen (flat ceiling but horrible paint job). We are doing a recessed beam and the easiest way to finish this would to re drywall the ceiling. I will get the measurements but i believe it is 3/8 drywall under a layer of concrete board??? Doesnt seem to be a board as it seems to be attached to the drywall but total thickness is about an inch... What do you guys think??? Ps, we havent moved in yet and are renovating it before we do, no worries about a messy job.