In experience I have found the MA-ANT-25 to NOT have significant distance gain over a simple MA-ANT-20. If I was surveying this I'd be using a combination of MR74's with MA-ANT-27 sectors. But you'd really need to do this predictively first and after playing with the coverage patterns look for best placement in combination with as few of IDF's as possible to reduce fiber and switching costs. It's a puzzle for sure. The buildings would simply be high loss attenuation zones in the survey software.
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