Did very well on many local tournaments with this bad boy, the main strategy is to spam your Xyz monsters and avoid any kind of field swep (cof cof nibiru cof).
Some of the usual combos I made were:
1- Pollux/Algeidi + any lvl4 = congrats, you have the most repeated R4 Xyz play of this deck
2- Pollux + Sheratan = Normal summon Pollux, then Sheratan. search for Caduceus, special summon it, search start chart with it. end with an R4 Xyz summon + Almiraj using Sheratan + Draw 1 if summoned a constellar Xyz mosnter with Star chart
3- Algeidi/Pollux/Caduceus + Kaus = normal summon Pollux/Algeidi or special summon Caduceus, then bring Kaus to the field. Activate it twice so you get 2 lvl 5 materials for your Pleiades. With Caduceus you can get Star chart an draw 1.
4- Galaxy soldier + discard material = easy CDI
Use Siat and Sombre for recovery/play-starts and that's pretty much it. Twinkle can be used very easely with 1 constellar in GY to make Pleiades, so dont be shy to search it with the Pollux+Sheratan combo. Didn't use Cradle on most of the matches but when i did, it saved the game.