20"x24"x45" - 400w hps - DWC - SCROG - 1 plant or 2?

The title gives most of the conditions. Would I benefit by having 2 plants in such a confined space? Or would it be more trouble than it is worth? What about two different strains?

I am going to cool tube the light.. as well as an intake and exhaust for the box..

I am an ambitious n00b just making conversation.

1 plant man, unless youre gonna flower with little or no veg...

Have you ran your set up at all????? I'm asking because I'm thinking about the exact same thing my box is built already but I'm waiting to get a cool tube. for the 400hps. How are your temps humidity etc..????

One. FIM or top early

Ya one plant with a decent veg so it can get pretty big and fill up the screen.

I haven't started yet. Sent off my order for joeyweed c99 seeds today.. Also got my htgsupply order in! i'm gettin ready to go! I will probably germinate after new years.. If i get my seeds before then, that is..

Thanks for the responses. I thought it was a pretty goofy idea, too.. Just wanted to double check.. like I said.. making convo..