Are you planning on upgrading the bridge and/or pups/electronics?
Also, have you considered using some sort of plastic wedge and gentle taps with a hammer to adjust the position of the saddles while the saddles are still tightened, or at least not fully loosened?
I've not messed with these types of bridges before but perhaps if you loosened the string brought the saddle back further than necessary and then and then tuned up, you could the tap the saddle progressively towards the neck and achieve intonation without having to entirely loosen the strings again.
Yes, in fact I found a set of (4) gold Ibanez MR4 monorail bridge pieces for $84, not sure if I want to spend that much being I use the same brand/type of strings so once it's intonated - it will stay pretty close using the same strings ... close enough for me anyway. I'm just not sure how far I want to go with it or if I'm going to swap out the pickups & electronics. I kinda see it as a (nowadays) rare find that I just had to get.