Simple answer; you should do what's right for you and your family.

I work 8-4 most days with a 45 minute drive each way. I bring my bike in the trunk 2-3 days a week and at 4pm a group of us get together and go for a 1-1.5hr ride, and then go home. The rides get shorter in the winter months of course, but they can be longer in the summer if we want.

It sounds like you really want the new job. Better benefits and a mroe stable employer? Those things are, in the great scheme of things, more important than getting your 10 hours/week in the saddle in.