First, I'm a JHU (undergrad) alum so I'll just get that out of the way up front.
I think you're in a great position to pick Hopkins. If you were looking to pursue the traditional path of doing an MBA then leaving your current job immediately after, I'd say go with Kelley. But since you're planning to wait to switch for a while, IMO that changes the calculus quite a bit. JHU just got accredited last year- I imagine it will get ranked next year. The average GMAT isn't too far off from Kelley's (650 to 670). But I think the long term potential is quite a bit more in Hopkins' favor. JHU has many more top ranked programs (med school, SAIS, other PHD programs, undergrad) and as a result the name stretches quite a bit farther. Sure, in MBA-specific circles Kelley is better known and will have more clout, but unless you're compulsively checking the rankings or are a b-school recruiter I imagine most will not know that Hopkins is unranked. Additionally, if you're able to get out and meet students in other programs, that network will be much stronger too. I don't think you'd be wrong to pick Kelley, but I do think you can bank on Hopkins having significant upward momentum.
I'll also add that as someone who is at SOM, which I think is in a somewhat similar situation (great university, somewhat lower in the rankings for b-school) there are tons of opportunities that I get from going here that I wouldn't get at Darden, or NYU, or even a place like Tuck. I think the same would be true for you at Hopkins. The strength of the university as a whole will draw in speakers/faculty/recognition beyond the level of its b-school peers.