If you are writing off California altogether...then probably a good decision to not buy-in there. If you will go back, even if it's once every 5 years...I'd still consider it. Value of the DL resorts down the road is going to trump value of the WDW resorts. Having the 11 month window at DL will have more importance than holding 11 month window at WDW.
In terms of the noise issues...we were there in July and didn't have these noise issues as well (room 1518 - 2 Bedroom with
DCL entrance by Pixar Pier right outside our door). Personally was skeptical of first floor room, but ended up loving the location as we were able to enter through the Paradise Pier Hotel. Threw our kids in the stroller, walked out the back exit next to our room and were in the park within 3 minutes of leaving our room.
Making a note to myself to avoid oogie boogie bash stretch for noise reasons as it seems others in this thread had the same experience in this time frame.