I'd try the Focus Hex. And I would string it very low, lower than the minimum recommended for the Micro. The idea with the Micro was that the ultra-dense stringbed would increase ball-string friction and increase spin. But that doesn't work. All strings and string patterns have sufficient ball-string friction to impart the maximum amount of spin possible on the ball through the effects of friction alone. Even shaped and textured copolys don't help in this regard. The reason why copolys provide more spin is that they are slippery and hard, allowing the mains to stretch and slide sideways along the cross strings during impact and then snapback, imparting additional spin on the ball.
In the micro's ultra-dense pattern, the mains will have a very difficult time sliding and snapping back due to all the friction between them and the multitudinous cross strings. Also, the angle of the weave is very high, meaning the mains will have to climb steep hills each time they try to slide sideways. I would think the only way you will get copoly to work properly in that frame would be to string very low, thereby reducing the friction and resistance of the crosses on the mains. But even that might not work.
My guess is that that frame would be ideally suited to 18g natural gut strung around the middle of the recommended tension range for the Micro. The dense pattern will keep the gut locked in place so it won't saw itself and break as quickly as in other patterns. And the low stiffness of the gut will still feel comfy in such a dense stringbed, will pocket the ball beautifully and probably provide nice spin as well.
But if you really want to turn it into a spin monster, then string the mains at 30 pounds with 18g kevlar and use Gosen Polymaster II copoly crosses at 60 pounds, but skip every other cross. That 22x16 pattern should be nasty
(You'll need to string the crosses tighter because you'll only have half the normal number of them, otherwise the frame will distort when you take it off the machine.)
I've got a Micro 95 arriving soon and that's how I plan on stringing it.
