It's much more stuffed that your regular tent. Don't expect the same room of comfort. I made the same change that you did this summer and I'm still missing the roomy loft and ability to sit upright and change comfortably. Depends on the size of your pack, it may also be hard to put everything inside. I usually carry a 30 liter pack so I'm ok. I still remember the first night in that the solo tent when I rolled over and hit the wall and when I was trying to change and couldn't stretch my arms out. But the weight and size of the packed tent is definiately an advantage, it's much cozier in cold/wet weather plus you are by yourself. Getting in and out in full rain/cold weather gear is a small issue too.  But I used the tent in 30 degree weather and becasue of the small space I was really warm. Hope that helps,
Matt