Trip Planning advice?

So, very soon I will be going on a pretty long atv ride. I was wanting to document my trip with gps coordinates of my tracks and trails, and associate certain points on this trip with pics that were related to a lat / long. I would just use my trimble geo7x hand unit and make a data dictionary so that i could have a pic option too. But im sure my company would not appreciate me using company equipment. Any stand alone gps hand units that i can bluetooth or attach to my phone. So i have accurate give or take 9ft lol, and decent pictures. I wanna upload everything to google earth after the trip. Any ideas, does this make sense? If im  correct you can add lat and long to the meta data in the phone, That would take care of the photo problem, but not the tracking problem. 

Thanks,