I've been preaching caution with Homer, both for service time reasons and concerns over whether he's ready.

I'm done.  Get him up here.

He's past the point where he could accrue a full season of service time.  If he's on the roster from now until the end of the season, the Reds still maintain his services for 6 years before he can go to free agency.  He's dominating AAA, and I don't know how much more he can really learn down there.  Opponents are hitting .179 (!!!) against him, and he's mowing down lefties and righties both.  Nobody's giving him trouble.  I was slightly worried about his K/BB numbers, but I read that the organization was forcing him to go to exclusively offspeed with 2 strikes.  I have no doubt that those numbers would be better if he had all 3 pitches at his disposal.  In his last 3 starts, his numbers are:

18IP, 2.00ERA, 1.00WHIP, 12H, 6BB, 22K

Worried about his workload?  Put him on a pitch count; I guarantee he'll get deeper into the game than Milton most nights.  Afraid he'll rely on the heater too much?  Don't let him shake Ross off.  If Ross shows confidence in Bailey's hammer, Homer will, too.  Our #5 starters are 1-9; even if Homer struggles early (which, honestly, I expect), how much worse could it possibly be?

There is absolutely no benefit to keeping him in Louisville any longer.  Let him take his turn tonight, then get his ass on the first bus to Cincy in the morning.  Friday the 8th, in the series opener at home against Cleveland would be a lovely time for the debut.