hey guys, well i am upgrading from ym th-350 to a 700r4 and i was just wondering what size stall yall would recommend for a motor with these specs. i normally shift the car at 6300-6500 rpm when going wot, not that that matters or anything lol. but any help is great wanted. thanks in advance

chevy 350 bored .30 over
-dart iron eagle heads with stainless 2.02/1.60 valves
-260dur on .555 lift with 110 lsa
-torquer 2 intake with holley 750