Too Tune or not to Tune, that is the question..

With your mods any gains you may get from a tune would likely be from bumping the timing. If you're not planning to do any more mods then I'd say sure go for it, but if you planning on doing some more mods then you may as well wait to get the tune.
 
Wait for a bit until yo do more exhaust work and maybe get gears. Then you can use the chip to correct the speedo and perfect the a/f ratio. Might as well spend the money on something else for now