Is this 90 turbo worth getting?

[Krem]

I just got an 87. I wanted manual, but it's still got a 7MGE, so I figured wth... there's always room for the manual swap when I go to a 1jz... so you could always switch up when you add the power... IMO, I notice I run about 3500 rpms when doing 80 on the highway.. seems a bit high to me, and on a 3.0L engine, I can only imagine the fuel I might save if I had an extra gear... However, it's my understanding the 5 speeds aren't geared all too differently, they're better no doubt, but I've also heard they need an extra gear as well..