I agree that 5,000 is a must for Holy Name-Padua. Last year, weather was crap (IIR, it went from rain, to snow, to back to rain) and it didn't stop people from not only gobbling up tickets but also showing up. Capacity is 3,100 at Brooklyn but there was probably at least 4,000 there (the Holy Name visiting side packed in like sardines in the stands and was two-deep SRO halfway around the fence).
While Strongsville (5,200) is probably the best best for a packed crowd that should fit everybody, especially with SRO, I'm hoping the OHSAA plays this one safe and puts it at either Byers or Brunswick. Ed's-Mentor have played so many playoff games over the years, it kind of saps interest and think Euclid is perfectly suitable for that game (and part of the reason Euclid built that new stadium from what I recall was to host playoff games like that one). This could be the biggest Holy Name-Padua game in series history, so I'm hoping they err on the side of caution with this one (something they didn't do last year when placing that regional semifinal game at Brooklyn).