Digital BW, The Print

(Re-sent -- my previous attempt failed, I think, so apologies if you get 
this twice)

Hi folks,

I've recently been using a K7 ink set in my r2400 to great success,
mostly printing on Moab Entrada with the profiles that shipped with QTR.
I've had some really lovely results with some low-key portraits
recently, and have had no difficulty getting good prints first time
thanks to using a colour managed workflow in PS CS3. I currently need to
order more ink, so I'm wondering whether to go for a CIS solution now,
or hang on until the K7 gloss support settles down.

What I'd *really* like is to be able to go back to gloss papers, but I
currently don't have a spectrophotometer so rolling my own profiles
would be tricky (not impossible, I've managed it before, but given how
well the profiles I'd been using with K7 split tone worked, I'm not
confident that I could duplicate those results).

So, what do I do? Do I:

1. Just buy another set of K7 split tone carts and wait a while
2. Buy a CIS and use K7 split tone in it now
3. Buy a CIS and go for K7 gloss in bottles and join the bleeding edge

I'm currently getting into a fairly substantial project that is going to
require quite a few prints, so going the CIS route is probably necessary
just from the point of view of cost-effectiveness, but I don't want to
invest in K7 split tone again if I can reasonably go for the new gloss
solution.

Advice/comments?

Thank you in advance,
Sarah