Don't do it, 3k doesn't justify the price for the improvements you will be getting since you already have L7.
Although I'm not an audiophile, I do like my music and enjoy high quality speakers, headphones, etc.
I think the L7 does wonderful in the higher ranges, I still believe it lacks a bit of lower-end bass. You should look up optimal settings for L7 up on google, I set mine accordingly and I think it sounds fantastic.
Btw, a family friend installed focals on his Sienna, its night and day when compared to my car.
2007 E90 328i - Titanium Metallic l 19" VMR V710 l H&R Trak+ Spacers l M-Sport Rear Bumper l Mtech Rear Lip Spoiler l Hamann Front Lip l Eibach Sportline l AA N52 Signature Exhaust l OEM Blacklines l MTEC V3 AE l 6000K HID l Nokya 7000K Fogs l MTEC License Plate LED l Interior LED l 15% Tint l BlackVue DR380G-HD + PMP