i havent built one myself(yet), but most(mostly all) plywood tanks have the glass installed from the inside and after the tank has been watreprofed and the silicone used as a gasket, but im sure you read all the same articls and builds so i dont hahe to tell you that...
if you install the glass the pour the resin after, you run a risk of cracking the glass as the resin gets quite hot when curing and the glass wouldnt expand at the same rate, resin one set has almose no give and when the wood expands and contracts it will more the ressin too and this over a bit of till well form leaks whre the glass and resin meet, which is why people use silicone, its flexable and alows or that give that you need.