Where to rack a McIntosh 275 amp


Hi friends,
I'm a first time tube amp owner now and am looking for thoughts and experience re: where to put it. I'd prefer not to put it on the floor. It's 77 lbs. I have a double width finite elemente pagode rack. The top shelf holds 60 kg or 132 lbs. I also have to put a 48 lb. Pro-Ject turntable on the top rack. Does anyone have such a rack and has pushed the upper shelf weight limit to around 115 lbs.
Is it insane to consider putting it on the bottom rack with a shelf 3-4 inches above it?
Please excuse my naivete and much obliged for thoughts.
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IMO, I'd be a little uncomfortable w the rack being so top-heavy. Not in terms of a collapse, but of it being unstable and easily knocked over.
I'd say it needs more than 3-4 inches based on my experience with most tubes, though I admit not having owned a 275…sounds a bit tight for ventilation. Put it on top.
The bottom. 1) you need space for it to vent the heat, and 2), it is super heavy.