Bose L1 Model 2 Wedding DJ

My 17 year old son doing a wedding with his system, and our new Bose L1 Model 2s with 2 Yorkvilles LS 700P powered subs. Many DJs don’t see the need for an extra sub if using 4 Bose sound really good, but I am old school and do like it better with the extra is far, it seems I am sticking to Bose after wanting to buy all RCF stuff.