What's the draw for this new opportunity? It doesn't look like you hate your current job, and with only an 11% increase (that your current company would probably match) it doesn't look like it's the money either. You said you've had your eye on this new company for a while - why? I'd be hesitant to leave a good thing for an unknown, and a new company is always an unknown. Is there a possibility of remote work with your current company? I'd ask, at a minimum. When I look at your description of your current position it looks like you're in a great job and I'd be reluctant to change because what you describe sounds really good and pretty rare.