A hopstand would definitely increase the hop presence in the beer and is a good suggestion. I've found it to give noticeable aroma contributions as well.
Alternatively, if I was aiming for more hop flavor without increasing the aroma or bitterness too much, I would move around my hop additions a bit, leaving the citra right where it's at. You say you want CITRUSy flavor (as opposed to CITRAy flavor), in which case I would move around my hop additions to accomplish this. I would move my cascade bittering addition to 30-45min and add an additional cascade (or centennial) addition at 15 minutes, and balance them so they produce the target IBU range you're looking for. I would aim to add at least 0.5 ounce (0.75 oz might be better) at 15 minutes so using cascade might be easier since it's lower alpha, but centennial pack a citrus/grapefruit wallop.
Hope this helps.