The OP will only be dry camping one week per year. I don't think it's worth spending extra money, time and effort to get the best setup for dry camping. He just needs something "good enough" and I think he already has it.
If it were someone looking to dry camp regularly, then these upgrades and modifications would make sense. But for HIS use, it will just be a lot of money better spent elsewhere.
P.S. Soundguy, my Grandmother was Canadian so I suspect that's where my comments are coming from. :)