IDC what a lot of people are saying about not enough space for that many tangs and that they might not get a long etc etc etc. This is a very reasonable tang list and wont be much of a problem. I will give you some quick tips on doing this successfully. If you want greater detail you can just PM or phone call or w.e
Step 1: While in quarantine get those fish FAT FAT FAT and accustomed to feeding schedule and type of food. Feed 3-5 times a day. I STRONGLY encourage getting off of the low nutrient frozen food bandwagon and get some dang New Life Spectrum food or equivalent.
Step 2: You say you have SPS so I assume your water quality is good and you probably have ample hiding spots. I still however encourage the use of temporary hiding spots ESPECIALLY if you have existing fish that have tempermant issues such as other tangs, angels, or triggers. Go to LOWES or HOME DEPOT and purchase some 3" 4" and 6" PVC fitting and throw them in the tank.
Step 3 Add the fish ALL IN THE SAME NIGHT. Typically you want the most aggressive to go last. But still add the fish with lights off and all in the same night. However, sometimes with a rare expensive fish you do the oppisite. As said for best success rate for all the fish you add the most aggressive last but there is sometimes an exception to this rule. BTs are pretty rare and expensive so I would make this fish the most comfortable by adding it first, your choice.
Step 4: Keep PVC fitting in there for several weeks minimum. Start taking them out 1 by 1 over the period of several more weeks.
An additional possibilty step would be if you needed to remove a fish that was being a bully. I consider this putting the fish in time out. If the fish is being mean then take him out and throw him in the sump (Why I like having big sumps). Same goes if fish get beat up or need to recoop. Beat up fish are easy to catch most the time but the bullies might be a diff story. You said you have a lot of SPS and such so I suggest building a fish trap. Very easy to make one...I built one out of simple egg crate and was able to catch a huge 9" emperor angel with it no problem...Just entice with nori, lettuce, brocoli for a tang.
I did not proof read this so sorry if I rambled and or mis-spelled a bunch of crap.
Do this you will be just fine. I have 16 tangs in my 300 gallon tank. Here is a video before adding 2 powder blues, a sohal tang, and 10 lyretail anthias. Enjoy.
