First MMW threesome for my BBW Wife will be with an 8.5 in. BBC

Well after fantasizing and chatting it up for a bit over 10 years we are finally going to meet up with a younger Guy to help out with our fantasies. I'm not small at 7" but she would really like to try something a bit bigger and since she's never done a BBC before she didn't have too much hesitation when we were looking up prospects. She jumped right on his pics and said "That one". Got a question though for any guys with that sort of endowment which is what kind of condom fits OK? She's allright with Oral for a bit but wants him covered while inside for safety reamisters.
Also for the ladies that have done this was it something you would have been OK with on your first "play date" or would you wait for BBC until after a couple of times? I will post back after the 9th,which is when we are going to do this and hopefully will have some pics!