I've added you to our latest RS:V2 boosting list. And I'm more than happy to help you with co-op on realistic. It's been a while so I'll be a little rusty to start, but it'll come back I'm sure... just like riding a bike.
But do you mind helping us out first? Assuming of course that we get a good group of 6+ to boost those last few chievos? Let me know.