Umbrella, Stand, Adapter

Apparently anything over 45" would be too much for a strobe light.

Having a look at getting everything from Calumet. I found a nice 7' stand on there for a good price.

Try here.

It's almost certainly too big for your room too, unless you have a vast space to do this in. I bought a 46" brolly and very quickly returned it for a 36" model simply because it took up HUGE amount of space in my dining room; I couldn't move. 36" is usable, a manageable size, and perfectly good photographically unless you're looking a big studio work with studio heads.

I got everything from Calumet, their own brand stuff is very good.