chris, timbo is right. get something rugged and cheap like a pre-owned 7 seater ford ter. your kids will trash it anyway, and you won't take a huge depreciation hit. just make sure it can tow. there is a lotus 2 eleven on carpoint for sale. it comes with trailer as well; just vinyl wrap your firm's livery down the side and colin's your uncle. henry will be happy, he already gave it the thumbs-up!
your family needs will be attended to, and your addiction will be drip-fed.