I'm caught in a similar situation, just at a slightly more ruinous price point, with my G3 16200. When I spec'd my big rig it was the best option, but things have moved on rapidly and the new QHY 600 mono or 410 OSC are serious contenders. However (And it is a BIG however) not only is a QHY 600 £4100, but I would need a new wheel, and worse (MUCH worse) because the 16200 sensor is "only" APS-H I thought I could get away with 2" mounted filters not taking into account that a) 50mm unmounted Chroma were the same price as 2" mounted and b) the G3 wheel would take 50mm unmounted as well as 2" mounted. Dur... *slaps head*
The QHY 410 OSC might be an option if I only wanted to image in RGB.