Corner balance (worth it?) and alignment

I just installed V-maxx's and LL bushings at Jack Junkies. Since the car is now lowered, can I just set all corners to the same height and expect a decent balance, or is it worth corner balancing? How much can an unbalanced car effect handling (besides "a lot" or "not much")? I plan on doing some HPDE's, and I want to learn starting from a good baseline.

If I should balance it, do you know anywhere that corner balances AND performance aligns? I don't want to drive all over.

If you're taking the car to the track and expect to go around corners at high speed, then you probably want it to handle predictably.
I had mine corner balanced and aligned at 5th Gear in Lewisville.
I took in Emillio's (949 Racing) specs for height, rake and alignment.