7%??? Are you positive? Monica Brant switched over to figure and she rarely gets below 12%. I think she may have been around 10% at the last Olympia, but all of the judges were saying the girls were still a bit too lean. The leanest I've EVER been is 14-15% and I was pretty shredded at 112 lbs and 5'2". I had veins showing all over my arms and even a few in my lower oblique area. In that shape I would've easily swept most of the novice figure competitions. I swear, I'm not trying to undermind you in anyway, but is your trainer a guy? Sometimes they don't realize exactly how us girls "work". I know you'll look fantastic. You've come a long way and are really an inspiration to us all, even to those who are not new to fitness at all.
Keep up the good work! Oh, also, check out this site for suits... they're not "custom", but they fit really good and are very sturdy.
www.sophiesswimwear.com
I don't know if they'd work for an evening show, but they might work well for your prelims and definitely for photos.