You're welcome!

Yes the DSC260 will be perfect if you stick with 3 ways, but then you will also have to handle the subwoofer(s)...

The 2470 is not that good, and will not be able to go down to 800Hz in the first place.
If could be a solution in the 1.2khz-6khz range (the directivity is collapsing quite rapidely) if you keep the 2118H, but then you need a 4way crossover (DSC280 maybe?, or a pair of M553, or maybe some minidsp modules if you are ready for some DIY)

What horns do you have access to on your local market?

As for the subwoofers, it is a different problem, and an easier one to solve, once your mains are up and running.