Rustic, Country, Biker Wedding... Ideas Needed HELP! Lol

Both myself, and my fiancee are into the idea of a rustic/ hippie~ish /country wedding. We also would like to throw in a motorcycle element, as we are both Harley Davidson lovers, and riders.... I have some ideas, but with 5 kids we are on a "smaller" budget. Please if anyone can help. I would love to maybe get married in a barn, with hay bales, for seating, wild flowers in my hair, a rather nontraditional dress with a nice pair of cowboy boots. My issue is how to throw in the biker theme, with the rustic without it clashing? Please if anyone can help I would appreciate it so very much! I`ve never been involved in a wedding before, and I have no help whatsoever! Any feedback would just make my day! ;o) Thank You!!!!