The Lakers are coming off a 109-98 home loss to the Nets this past Thursday. The Lakers haven't lost two straight home games all season. I don't see the Heat pulling off the feat. 
Miami has failed to step up all season. In their last 11 games, the Heat have played nine games against the Wizards (twice), Hornets, Rockets, Kings (twice), Knicks (twice) and Hornets. The only time they played above .500 teams during this span were matchups against the Jazz and Clippers. The Jazz beat the Heat by 18 points in Utah and the Clippers defeated the Heat by seven points in LA. Note the Clippers were minus Kawhi Leonard and Paul George when they knocked off the Heat.
In the five games previous to their last 11 games, the Heat played the Clippers, Nuggets, Nets twice and Raptors. They went 0-5 in those tough matchups. Miami is 0-6 ATS the last six times it has gone against an above .500 opponent. 
Miami has gotten healthy. So I believe the Heat will start improving. But I don't think this is the spot for the Heat even with Anthony Davis out for LA.