No way you're gonna replace that amount of hps with quality leds for that price. (Quality being quantum boards, Samsung strips, and cobs) But if youre looking to run them together to cut down on heat/bills, that may be more likely.
Any light will give heat, quality leds being on the lesser of the btu scale. Some blurple leds can run hot as shit because they run rather inefficient.
Whats your room size? Reason for wanting to go toward led? (Heat? Electric bill?)
I've always thought about running some a vert hps in between 2 rows of plants/my quantum boards in the future. That may be a little much for a small tent for me. But sounds like you have use of a whole room though.