Yes, it is realistic if you use a courtesy bus (for shopping in Publix supermarket). You'd be best situated if you settle around Turnberry gulfcourse and walkway (to walk, rollerblade, bike etc) - because it is close to Aventura Mall, with it's many restaurants and AMC movie theater.
There are many different condos in that area and some are less expensive with smaller maintenance fees than others.
There is a sport's club in the mall (with great juice bar)...and there is a Miami Dade fitness club on 188th St. (same street as the Aventura Arts & Cultural Center). There is a couple of nice shopping plazas over there as well, with Barnes & Nobles and two Starbucks for your coffee.
Would love to show you what Aventura has to offer,
Beachfront Realty, Inc.