For several years my main pedalboard for arena-size church conference gigs has been something very similar, though I've found after trying several preamp/DI combos that a dedicated high-end DI is a good idea.
I've also found that the Tone Hammer pedal DI has worked very well for a clean DI and throughput on stage. Great sound and a pre/post-DI switch.
+1 for REDDI as well. I've used that for some great sound on stage and out front.
A couple other options for simplicity in the same price range:
Radial's Firefly 2-channel tube DI; and
RMI BassSwitch.
I have not used either one, but for what you are looking at spending, perhaps adding a wireless and comp to that with the option of two different loops might be something to consider.
Also, while I swear by my Line 6 G50 wireless, I am very interested in the SHURE GLXD-16 pedal wireless with tuner for smaller real estate, standard 9V power supply instead of high-draw 9V, integrated tuner, and RECHARGEABLE lithium battery claiming 16 hrs. Even if it was 10 hrs, recharging instead of going through AAs, or using rechargeable AAs that don't prompt an accurate Line 6 battery level reading could be VERY cool.
Just two cents...