with a replacement barrel on the 98 they'll perform about the same but the most important in regards to accuracy is the quality of paint you use. following that, barrel length doesn't really matter but again the quality does (the 98 has a pretty bad standard one).
you mention range and put simply every paintball gun has the exact same range, 300fps is 300fps regardless of what shoots it unless your using an apex or flat line barrel which puts backspin on the ball.
id advise avoiding the Trracer as a starter gun. Its a nice shooter but me and my mate started with them and whilst your learning, unless your playing against renters, it puts you at too much of a disadvantage. we ended up using site guns half the time as a result.