We just bought a big tent (15x12 I think), 72" high in the middle.
Be sure to have a good air mattress. (Don't get a cheap
Walmart one, or it will run out of air every night and you'll find yourself on the ground in the morning.)
We don't mess with sleeping bags. We bring sheets and blankets, and make the bed, just like at home. Much more comfortable that way!
Use a little tent heater for the chilly nights, and have a little fan, for the warmer nights. Be sure to use a heavy-duty cord, with 3 prongs, so it's grounded, in case it rains. (I don't really know if that's better, but I feel safer anyway. lol)
Get a screen tent, to keep your "kitchen" in. We have a Colman Camp Kitchen, with a sink and counter space, like this:
Camp Kitchen
It's nice to have a rug outside the tent door, so you can take off your shoes before entering the tent. It keeps sand, etc. from getting all over the floor on the inside of the tent.
Get a battery-powered lantern to keep in the tent too, for light. But, be sure to turn it off before getting undressed!! Otherwise your silhouette will show through the walls!!
And, keep a flashlight in there with you, so you can take it with you when you need to go to the comfort station in the middle of the night. Or, in case you think you hear a spider and need light really fast!! (I know this from personal experience!)
I'm sure others will chime in here with other ideas for tent camping!!
