I'd drill it in a heartbeat. There's nothing to it... other than the fear of breaking the glass. Once you get past the fear, it's super-easy. BRS is where I got my hole saws. A cordless drill, a trickle of water, and patience enough to go slow and easy, and you've got a drilled tank. The biggest expense will be the bulkheads and fittings. Well worth the money, and looks so much neater. Just my 2c...