reelcrazyfish makes a good point, although if the videos are for personal use you could probably get away with no wireless mics, and many cameras come with an adequate shotgun mic standard. Also, if you will have a cameraman the LANC remote isn't necessary either, but would be for videoing yourself.
The advantage of a prosumer camera is the manual functions. I mentioned in another thread that auto functions are not woods friendly. They pick up on the wrong things and can absolutely ruin your footage. If you want to do it and do it right, spend the money and get something you will be happy with. Once your buddies see the footage, they'll be happy too.