Skip looking online for tanks and stands.
1. Tanks can't be shipped, only acrylic in some cases.
2.You can make your own stand if necessary,if you do get it online it'll seem kind of cheap but the weight charges will get you in the long run.
Try looking in walmart. I've onlty been to about 3 different ones in my area but they all have cheap starter tank kits. They have one with a 55 gallon tank, flourescent lighting, thermometer, a filter, and other little stuff. They also have stands if you don't want to make one. The kit runs about 150 dollars and the stand is about 70 or something close to that..... You might have to buy additional things like upgrade the filter or something if you want to but i'd say it's really cheap. I got my 30 gallon starter kit from there and it's pretty good.
A 55 gallon is too small for a tang. I think 75 would be aminimum in most cases.
And i'll tell you this right now. Unless you buy small fish you won't get 10 fish in that, even in a 55 gallon. .....Most triggers are too small for a 55 gallon. And it depends on what kind of puffer you want. Sharpnoses are usually around 4 inches or less so they would be able to be kept in a 55 as long as you choose tankmates wisely. Dogfaces are usually kept in 55's too but all the ones i've seen still look kind of cramped. I've seen the golden variety and it seemed crowded in this one stores 150 gallon. It was pretty huge.
The choice on fish is basicly depending on what you like. So get an idea and ask it here and we'll make suggestions or change things.