Gear I suggested. Mara's, Coh etc...
Highest Strength requirement item: Spirit shield with 156. Need to have 121 cause of equipment bonuses. 35 dex for HOTO. So level 90 sorc would have 460 stats total, 111 into Strength, 10 into dex, 339 vita.
Her life on level 90 with those stats and char starting values will be 807 (BO-able), and another 10 from equipment. She would have 12 allskills on BO switch including battle command, with BO level on top of that. Let's say "average" 4 BO stick, that gives total of 80% life and mana bonus including allskill bonuses. She would end up with 1462 life.
Her mana with such level and equipment would be (assuming 90 from spirit) 343 BO-able and 10 bonus from equipment. Inc. max mana is 65% total, ending on 840 mana total.
Resists are, as stated, with lowest rolled stuff on resists, you would end with all maxed on hell except fire (145 total). I'm sure you don't have 30 allres hoto and 20 allres mara's, so at least 10 you can get more in that part, so let's say you need ~20 fire resist to have maxed on hell. That are 2 small charms. So, using cube and rest tome of ID or skillers + gheed or something, you will have at least 12 space for small charms. 2 go for fire resist, so you can place 10 more plain 20 lifers. If you have plain skillers and 20 lifers with 2 plain fire ress charms, you will have 200 more BO-able life, or, in the end, total life would be 1822 with level 90 sorc.
Damage: assuming gheed + 6 skillers + equipment, her damage would be ~31-32k on Lightning. 1.8k life sorc with such damage is quite nice. Mana of ~800 is good as well. Higher is better, you can use mana gloves if you don't care too much about MF, or some life/mana charms. Or replace 1 skiller with grand life/mana charm, that will drop you to ~29k damage though.
I hope this helps.