I went through this with an 1100MX. You can get a BT30 3/4" endmill holder or ER32 collet chuck to hold TTS tools, but it's sub-optimal with that much stick out and places for tolerances to stack up. For face mills I'd get a size and weight that's reasonable for the machine. IDK what Tormach's spec is but HAAS says no more than 7" stickout, 5lbs and 2" cutting diameter on their BT30 DT1/2 machines. HAAS sometimes puts BT30 stuff on sale and it's on the upper-end of China-quality tooling. Maritool is where I go for nicer tools.
Oddly small drill chucks and JT arbors are also not common in BT30 as it seems the default for BT30 is ER tool holders for most everything.