+1 to JDNYC on all points there. There was a time in the late 80's and early-mid 90's when Mackie was the very best bang per buck for a budget studio, providing quality far above the entry-level price. But those days are long gone, and now Mackie is only "as good as" its price point, and maybe not even quite that. If I was buying a mixer for a budget studio, I would either buy an older MIA Mackie, or certain old Yamaha models; or if I was buying new, I'd get an Allen & Heath. My impression is that A&H is presently the "best of the upper end of entry level" for mixers.
For monitors, a lot of brands and models have flooded the market over the last decade, and I no longer know what's hip. My only suggestion is to have a variety of different kinds of monitors, including cheap car speakers, an iPod dock speaker setup, and some large home stereo speakers, in addition to some "nice" proper monitors, so you can hear how your mix will sound under a variety of "normal" listening conditions. But I wouldn't bother with Mackie monitors unless you get them used/cheap.