Stove size for SO LBO?

[mahonsr]

I just picked up a seek outside LBO. Great tent - I'm really looking forward to heading to the mountains with it. I got the base plus vestibule with the stove jack in the vestibule. Any recommendations on stove size? Thinking about getting the tarp as well. Set it up in the back yard and I could see it getting pretty cozy with 2 plus stove - but my hunting/backpacking partner is my 12 yr old son so space isn't that big of deal and it'd only be for a couple of nights with more than one person most likely. Any recommendations are much appreciated.