A longer toptube will be better both for a taller rider but will also make it more stable for a jump/race bike so you'd benefit from that for sure. At your height an XL or XXL seems like a sensible decision but I'm basing that on a quick Google rather than experience. Honestly, I don't really have experience with race BMXs, but if you're just looking to whip about on the pump/race track then it seems like the right choice.
That Haro looks sweet, probably better than the Redline XL I linked since it's XXL.
A longer toptube will be better both for a taller rider but will also make it more stable for a jump/race bike so you'd benefit from that for sure. At your height an XL or XXL seems like a sensible decision but I'm basing that on a quick Google rather than experience. Honestly, I don't really have experience with race BMXs, but if you're just looking to whip about on the pump/race track then it seems like the right choice.
That Haro looks sweet, probably better than the Redline XL I linked since it's XXL.