No offense at all k
But car boots are there for a reason. I know that some people
advocate taking out the spare tire to lighten the car and hence
improve FC, but you will never know when you need the tire. Better
safe than sorry. The spare tire may save your life rather than risk
a puncture/torn tire.
If you want a good sound system, won't it be better to invest in a
home theatre system with surround 7.1? I mean, you are spending the
bulk of your time at home (especially with 2 kids), so I guess the
car boot can be saved up for better purposes.
I applaud you on your decision to 'downsize' your entertainment
system 