I played 7.0 mixed last summer. I actually had never played mixed until then. I was partnered with a very tournament and league tested female in my first ever MX match. I thought mixed league was more casual but she was very competitive and I perceive didn't really like playing with me. So I was a little nervous. We got slammed in our match. I didn't play that great, but we played an experienced 3.5 female and soon to be 4.0 male. I don't think my partner said two words to me after. We never partnered again. After that, I partnered with someone else, who was also sort of intense but we worked together well and won matches. Taking my second swipe at 7.0 MX this summer. Sort of looking forward to it.
Discounted Prince and Head rackets, cheapest string I can get, strung at 60+ pounds, clothed in any name brand under $10.00 mixed with Target.