oneofakind,
First let me say that I think the Bose L1 system would work well for you and I think you would be happy with it. Of course you can always try it and if you don't like it, take it back.
Now, why I wouldn't buy it again. Well it's mostly a case of been there done that, now I want to try something else. I'm a gear head and getting something different sounds like more fun. I got rid of my dual Yamaha Club series speakers because I wanted to cut back on the weight and make things easier to haul around. The individual pieces are lighter and that's a great plus but now there are more pieces to deal with. I have two PS1 power stands, four L1 tower pieces, and four bass modules. The overall weight is probably a bit lower than wood cabinets but I don't know if it's lighter than the ABS plastic cabinets.
In the past plastic cabinets sounded like garbage to me. Some of them still do but there are now better newer lightweight speakers made of plastic. I know I already mentioned the QSC K series speakers but they are a good example. There are 8, 10 and 12 inch models weighing 27, 32, and 41 pounds. That's not bad! I think one of my power stands weighs more than 32 pounds. I don't know how much the new power stands with the outriggers weigh. Now the QSC K series sub still weighs 74 lbs but it has casters built in.
For me I think something like the QSC K series would work well and like I said before at $3700 full retail for two K12s and 2 KSUBs that's only 1/2 the cost your looking at. Now I realize that you would need other pieces of equipment like a mixer with effects and a pair of tripod stands. I also realize that you are getting some other items like the cart and hard cases, etc. So that isn't a direct comparison in price. I would probably opt for the K10s and one KSUB to start so I would only be looking at $2450 or less for street prices.
As a DJ the Bose system works fine but for pure stereo music it's not quite ideal. For your setup I think the Bose L1 system would work great. The L1 system was designed for musicians and people adapted it to work with their DJ gear. Bose didn't market the system to DJs until later on and I think they only did that because there was an obvious market for it. Hooking a mic to
ONE L1 tower and hooking a Keyboard to
ONE Bose L1 tower is ideal. This is how it was designed to be operated. Using the Bose L1 as your monitor and your PA also fits right in with the design. If you want or need to hookup mics to more than one L1 (like I do all the time) sorta breaks the rules and makes things more complicated. For example I want to have all my mics run to a mixer so that I can ride the gain on my speakers and singers. If I want to also use the EQ presets in my power stand, I would have to route those mics to input 1 or 2 on the tower. No big deal but if I'm using the EQ for an SM58 mic I can't also route my left or right stereo sound from my computer to that same input because it would also be modified by the EQ preset. It becomes complex to setup. There's more to it than that but I think I have already made it too confusing.
As for setting up the L1s in your venue, the best thing to do it just try it and see how it works. I do think getting part of the tower above peoples heads is a good idea.
Parking IS a
(@$%!) in the city. When I was living the the bay area, I would charge extra for gigs in the city. I completely understand needing to get everything in one trip. With a good cart and careful loading you should be able to get everything in one trip. I am able to get just about everything I need on a hotel bellman's cart.
I only have the soft bags and after 2-3 years of gigs the Bose bags have taken a bit of a beating. One of the two zippers on the power stands came off. I can still zip the bag up but I have to go all the way around now with the one zipper. One of the tower bags has ripped about 6 inches along one of the seams. The B1 module bags are fine but they only cover 5 of the 6 sides of the bass modules. Thus the plastic is a little scuffed on the top and bottom edges. None of that bothers me too much one thing that does bug me a bit is the "screen" on the front of the L1 towers. All four pieces now have small dents in the screen. They are not that easy to see, especially in a darkened venue but I know they are there and it bugs me a bit. I treat my equipment pretty well and I still have these dents. It's almost unavoidable. Many people have put their L1 towers in a hard case but that just adds to the weight and the bulk. If you care about the looks of the towers I would recommend a hard case for the towers.
P.S. I'll also take an invite to a gig. I'm a bit further away in the Sacramento area but it's not impossible.