5.1 monitoring on a budget - recommendations?

[iguana]

Hi,

during the next months, I'll be working on the post-production of an indie movie, and as this is my first more serious venture in that direction, I'm still kind of a noob regarding surround stuff. Basically, I'm planning to extend my existing stereo setup (Tannoy Reveal Active, which are now being superseded with the new Reveal 5, 6 and 8 ranges if I'm not mistaken) with rear speakers, a center and a sub.
As I quite like my Reveals on stereo projects, I wouldn't mind getting 2 more of them as rear speakers. Has anyone tried the tannoy stuff in an 5.1 environment? Is this advisable? What about the center speaker, does it make any sense to try and get a single, 5th speaker, same model as the rest (which might prove difficult, as they're only sold as stereo pairs)? Or should I spend a little more and get one of the specialized center speakers from the new model ranges?

Regarding subs, are the Sub10s from Tannoy any useable? I find their price suspiciously low compared to other subs, but then again, I probably won't do surgical LFE tricks, so getting an idea of the "oomph" that will occur on home theater systems and small cinemas will probably suffice.

As the title suggests, I'm somewhat on a shoestring budget - the whole upgrade should not exceed $1600, and I'm not sure yet whether I'll need a monitoring controller (I think technically, I won't need one, but it will certainly make things easier not having to feed the monitors via the direct outs of my monitor mixer).

I'd be grateful for some comments from someone more experienced with this kind of stuff - is this any feasible or am I totally off-track?