x5 weight issues

[Marine6531]

Good afternoon! So I'm moving back to NY from San Diego. I got a rental truck and planned on pulling my X5 behind on a trailer. Problem is the trailers that budget or penske use dont hold much weight. Budget's holds 4255lbs. I took my X5 to the scale the other day and it weighed in at 4740lbs. it had a half a tank of gas at the time. So i figure i can get it down 70lbs by making sure tank is empty. Also I'm going to take out the spare (30lbs?). That still leave me quite a bit over. any ideas on what i can remove that would take off some weight? I was thinking the entire front seat assemblies, anybody know an approximate weight for one? Thanks

2004 X53.0 Sport package