Don't listen to PlattsVegas. There's a big difference between a wheel that's "good enough" and a properly built wheel.

Keep trying, man. You'll get it. If your spokes are all really tight, you'll be able to dial it in by both loosening and tightening certain nipples in extremely small increments. Not having a truing stand makes it a little more tricky but I have faith in you calv!

How are you radially? No hops?