My girlfriend (sub-50kg) and I (82kg) bought second hand 14' Javs a year ago as our first sups.
With the rounded edges at the back and low width at the front, they roll in sideways chop but they track very well. Tracking can actually be a big disadvantage for a small paddler in moderate to strong sidewinds. GF is very stable at her weight on it though (but not so much for me) and with hardly any weight on it she skims over the water really well. I counteract it by going forward to bury the nose or back to make it turn easier but a flatter, fatter tail is more stable for that.
That said, if you don't want to go out in winds like that, they glide beautifully on flatwater.
Also the weight of either 14' Jav or Glide when lugging it onto and off the car may be a hassle at your size.
Either models in a 12'6" might be better for you. I tried a 12'6" Jav at a demo day a month ago and was hugely impressed at its versatility. Not quite as fast as a 14' but it doesn't sound like you are looking for that.
The Glide is a downwind board, but would be a good cruiser too and has more width up front for your bag and is more stable than the Jav.
I'm still lovin' my Jav - it's a bit like taming a wild horse with its instability and has taught me a lot in a short time, but I'll need something more stable for the rough stuff. There is still temptation to get a Jav MC as I tried both it and the LE in flatwater over some short sprints and reckon by my GPS the MC was just as fast and the full carbon is more durable than whatever the LE is made of, but that is getting off topic.
Regarding the camping, you can get bungee tie downs for the front of your sup (there is post topic on this in this forum somewhere) or you could also get out the gray elec tape. Glide would be better.
You might even consider an inflatable for camping - they would save you taking a camp bed!
Happy paddling!