Don't forget cables and housing go into those things. To my eye it looks like the housing is going to be headed straight for the seat post and have to make a wicked angle to get back around to the brake.

Take Doug's advise- slow down and work on fundamentals before jumping the gun.

Looks like you are making good progress. Time for another top tube! (and maybe DT- depending on the dent). You've worked hard so far, don't rush and bumble it just because you are excited.