I have a Pop-Up 38 and feel that up to ~60lbs in the load shelf for me is the max limit. For whitetail - I’m shooting South Texas deer that are much smaller than your Northeast whitetails, so it’s not a problem at all.
How much do your stand and climbing sticks weigh? I did load it down with an 80lb sack of concrete when I first got it and while it would definitely hold the load, it wasn’t comfortable for more than 20 minutes. That same 80lb sack on a MR Guide Lite frame is a completely different story and no issues at all.
For a day hunting pack or an overnight trip - I love the Pop-Up 38. At the current blowout pricing, it’s almost a no brainer in my opinion. Good luck!