Hey bt22! You mentioned at the start that you had a canon Rebel - do you still have this camera? If so, really not sure why you want to upgrade. And in particular, why you want to upgrade to the Nikon D610 - nothing against that camera, but it seems like an extreme jump.
If you still have the rebel and it still works then stick with it to learn the ins and outs of an SLR system. You may decide that it's not what you want after all & opt for a mirrorless system instead (better to find that out before blowing $3000+ on heavy full-frame slr kit). You asked "Is it best to go full frame?" and the only (albeit not particularly helpful) answer is: it depends. As someone who has made the switch from crop to full-frame I can honestly say it is massively over-rated. You'll need to spend a lot more money on camera bodies and lenses, but there is very little that you can do on a full-frame camera that you can't do on a crop one. For most people I honestly think that full frame is an unnecessary expense.
If you're determined to start an slr system and to go full-frame then I'd definitely suggest the D750 instead of the D610. You mentioned that your daughter is getting into volleyball - if you want to shoot sports then there is no competition in terms of autofocus ability. I'd also suggest a used D700 over the D610 - it's an old camera but has pro level autofocus, the image quality still holds up, and they can be picked up very cheaply these days.
The glass you mentioned is incredible, but very heavy and far more than most people will want to carry around. I own both the 24-70 and the 70-200. I use them for professional work and love both lenses; however I'd never consider taking either one on holiday with me - I just couldn't justify carrying all that weight. My travel camera is an old 6mp D70 with a cheap plastic sigma 18-200mm f/6.3 lens. It's light, and cheap, and perfectly sufficient for the job of taking holiday photos.
I have absolutely no doubt that you'd be able to get excellent results using the gear you mentioned, however I also believe you could get equally good results with lighter kit.
I hope that gives you a few things to consider and really hope you find exactly what you're looking for. Keep us posted with your decision, and welcome back to the world of photography!