I do live sound and DJ'ing. For DJ'ing I've used the L1 MII with B2 successfully covering large areas. The last one was a car show where it was outdoors covering an area about 80% of a football field where I was located at the 50 yard line. Another previous event was a cancer walk benefit where I had to cover another large area (outdoor park where I was at the bottom of an slight incline, again probably about 80% of a football field but this time in the end zone). The secret is to get the L1 MII up higher and reinforce the bottom end. At both of those events, I raised the 2 L1 MIIs up 24" on custom made wooden boxes, which are extremely stable. (Yes, Bose will never condone this action but it transforms the L1 MII into a fully capable DJ setup for a large-wide area because the sound is not being blocked as much.) Leave the B2s on the ground. You must also augment the bottom end with additional subwoofers. For the car show, I used 2 Bose F1 subs to assist the B2s. For the cancer walk, I used 2 QSC KW181 subs to help the B2s in such a large outdoor area. A funny aside: I had to run a brief sound check at 0645 for the cancer walk where I needed to be bumpin'. Shortly thereafter, I had someone from a neighborhood (whose house was beyond a football field and a baseball field combined distance away) come by and stated that they would be having a wedding in their back yard around 1030 and asked if we could keep the music lower during that time frame because they were concerned about not being able to hear at the ceremony. They also commented that they felt the bass in their house during the initial sound check. I run the additional subs on their own mixbus so I can add/remove additional bass at any time. This gives you the flexibility to easily adjust the bass needs of the song/situation to the event. (I use a Behringer mixer because I sometimes need lots of channels for running live sound at these events too.) You could use the Aux output on the T1 mixer to drive the extra subs to have a similar independent control. I've also used the Bose F1 812's and F1 Subs successfully for several events. While the 812 is louder it does not have the horizontal coverage of the L1 MII. Both of those speakers are great for DJ'ing. But, I think you'll be surprised at the results of the L1 MII if you rent some subs (to test) and raise the L1 MII higher.
Good Luck with whatever you choose! Sound equipment is just a tool. Choose the right tool for the job and you'll have great results!