T&D's are much more than you need for your usage and big ticket items.
My Harland Sharps have worked for two decades with a .633" cam and 340 pound springs at 550HP. They are bushed rollers with a true ratio. Whole kit is ~$500 less than T&D's.
Harland Sharp S4006BKE - Harland Sharp Shaft Mount Roller Rockers - Overview - SummitRacing.com