http://uo.stratics.com/php-bin/show_content.php?content=30739
It's not possible to get as high as you want, due to the weights of the properties.
The attributes have a weight of 1.1 each
The Faster Casting 1 has a weight of 1.4
Faster Cast Recovery has a weight of 1.2
FC 1, FCR 3, and 8 in all three would total 590%, well over the cap of 500%
Do note that, IIRC, there is currently a cap of 150 for stats, with modifying equipment, and a +25 cap each on HP/Stam/mana increase.
You could do FC 1, FCR 1, two of the Stats at +8 and the third at +7 (140+40+220+96.25 = 596.25)
or FC 1, with all 3 at +8 at 470% intensity
ir FCR 3, with all 3 at +8 for 450% intensity (and this one can be done on non-exceptional jewelry)
Armor gives derived stat bonuses, not the primary stat bonuses, so you'd have to use artifacts and replicas to get the rest the way to 150/150/150 for STR/DEX/INT (and would need a total of +47 from those artifacts).
My advice would be to get an arcane shield, for its SC with FC 1, and do the FC 1 with +8s for one jewelry piece, and the FCR 3 with +8s for the other, for your plan. That will only put you at FC 2/FCR 3, but if you ever use a boomstick for a weapon (as it's a 1-handed macing weapon), it would give you some LRC, and raise the FCR to 5.