Well, if you can reduce the run to 25' you are good to go with a passive cable now, and for anything in the foreseeable future.
IIWY I would put the rack where you want it. In my house, the gear is all house in a built-in cabinet off a hall. If that means 50', then so be it.
1080p60 requires about half the defined HDMI bandwidth. It is quite possible to do that over a passive cable at 50'. 1080p24 3D (BD) requires somewhat less. So, you should have no problem with it either. The big question is do you want to be able to support higher bit rates, say for 1080p60 3D for gaming, DeepColor, etc. If you do, then you want the full bandwidth. To get that you will want an active cable, or a good extender. IIWY I would go with a HDBaseT solultion. All you would have to run would be one Cat 6 cable.