It's great you found a helmet that fits and feels good. I haven't tried the Tacks 710 myself, but I've read rave reviews from people that have used one. When I'm in the market for a new helmet, it's certainly one I'll have to try.
For elbows that aren't bulky and feel like they're already broken in, check out the STX Surgeon line. I tried on the old STX Surgeon 500s, they were low profile, comfortable and mobile - almost as nice as my Warrior Projekts. The Surgeon RX3 is the updated version of what I tried on and there's been plenty of positive feedback from people who have used those. You'd have to order directly from STX, but they have a 14 day trial offer for their top end pads and they're also less than $100 US (which is much cheaper than top end pads from Bauer or CCM).
There's a review here on the step down RX3.1 pads (no 14 day guarantee on that model. The pads are the same design, but the RX3 is lighter with higher end foam):