I think the first picture flows much better.Gidday Pushie,
Well, I thought it looked good, but agree that it was too short. I too like longer bikes. However, the lengthening in the top tube doesn't look right to me.
Here's how I would do it...
I would angle that top tube extension down so that it follows the line towards the seat tube, then put some sort of gusset there as shown with the darker blue piece.
But if you have already welded that piece in, then you could put a gusset in beneath to continue the flow of the top tube, like this...
That's just my 2 dollars and 99 cents... it's going to look great either way.