If your floor is a concrete slab, using a good rack or TT stand is OK. Otherwise consider a wall shelf (Target) mounted to (preferably) an (outside wall) constructed of (preferably) brick or concrete block. Interior stud walls are OK too if they're not too large (in area) and don't vibrate too much -- they're still better than wood joist floors.
As for turntable location, especially with Maggies, which spread the wave over a large area (a good thing), you can actually put the TT between-and-behind the speakers (on the rear wall) or, if that's not convenient, then on one of the side walls near the front (listening end) of the room. The front wall (behind the listening position) is OK for a good rack on a slab, but not for wall mount (unless it's a masonry wall) because the bass energy is most intense against that wall.
As for turntable location, especially with Maggies, which spread the wave over a large area (a good thing), you can actually put the TT between-and-behind the speakers (on the rear wall) or, if that's not convenient, then on one of the side walls near the front (listening end) of the room. The front wall (behind the listening position) is OK for a good rack on a slab, but not for wall mount (unless it's a masonry wall) because the bass energy is most intense against that wall.