All right confession time. I've been keeping marine aquariums for a little over two years, and I find myself in a situation similar to yours. I have several tanks now, but my main reef tank is a 75g and it is stocked with:
5" yellow tang
4" Hippo
3" six line
3" gold stripe maroon
and a few peaceful fish 1 bangaii 1 randall's goby/pistol shrimp pair and two blue green chromis.
1st of all, stocking this heavily requires HUGE amounts of maintenance and water changes. 2nd Both tangs, the wrasse and the clown have all grown increasingly aggressive as they get bigger. I'm going to have to move the clown and at least one tang to my 125 FOWLR soon. Even then the other Tang will undoubtedly continue to grow. I know they can get HUGE, but at least I know I can trade in a large healthy specimen at my LFS for premium credit, so I'm not that worried about that.....BUT have you tried to catch any fish out of your tank yet??? They don't like it. They just don't! And they can drive you absolutely CRAZY trying to net them.
Think long and hard on this one. Really on all your additions. Once they go in they are in. I know several people who have torn their tanks apart just to catch one fish.
That being said, check out orchid dottybacks They are extremly colorfull and make a great addition to smaller tanks. Plus they can hang in a moderatley aggresive tank.
BTW what kind of clownfish??? Some of them can be a handfull as well.