I'm looking for some positive offset wheel spacers. j/k
But, I have read somewhere, (probably some off-road forum so like any other forum, it could be true or b.s) ... that for every inch or lift you should add an inch of travel or an inch wider track. Probably some firmer coil springs is equally important.
The mid-travel and long-travel setups sort of supports this concept with more travel and longer front axles.
But then again you haven't lifted yet so the offset/backspacing is probably almost ideal.
Money would be better spent on new rear shocks. That was my first upgrade and the affect on handling was very surprising since they were rear shocks. Got them from PRGproducts.com
The ratio of lift vs width has to do with keeping the stability, but lifting just a few inches isn't going to result in instant in-stability issues...
Long/mid travel kits extend the control arms to get that travel and many times the spindle for those set-ups won't allow a positive off-set wheel, but none of it's done just for the "wide look"
Again, spacers are supposed to be a solution, not the main plan. You would have to replace your wheel studs for spacing .500" - 1.000"....Just keep looking in the Buy/Sell Forum, there are guys ditching their old aftermarket wheels all the time...