Yo- SouthJersey, impossible to give you an answer you with that limited info.
Forgeting the equipment for the moment, there's a large swing in weight requirements among people. A lean 'n mean 5'10" athlete might need 5-6#s less than a chubby desk jockey of the same height and weight.
Start with your known weight requirements for the most similar equipment, and make individual adjustments for each piece of changed equipment; tank, BC, & wetsuit, adding or subtracting weight according to it's comparative bouyancy. There are charts that show tank bouyancies, compare the weight of the backplate to yours, and guesstimate for the wetsuit difference. This should yield a reasonable starting estimate, and you'll do a final bouyancy check before diving. As a suggestion, if you've used that wetsuit before, calculating the differences for hardware is easier than for thermal protection.
