against a straight we have 4 outs to a boat, 9 outs to the flush, none of which could be spades since we already hold those two cards, so we have 13 outs with 46 cards left in the deck, that's 28.2% to win
against a set of 8s, we need a king or ten or a spade, which is 28.2%
against a set of queens or tens we need a flush or a king only which is 2 + 9 cards = 11 outs which is 23.9% to win
against a set of kings we can only get a flush to win, which is 9 outs = 19.6% chance to win
against a KQ we have a ten or flush draw = 23.9% to win
against another KT we need 9 cards to win, otherwise we draw, 19.6% to win, 80.4% to tie - 59.8% equity
against K8 he needs an 8 to win, we win 95.7% of the time
against the nut flush draw he has 9 cards to win, we have 80.4% chance to win
against AK he needs a non-spade A to win, of which there are two in the deck, we win 95.7% of the time
against second pair he needs a queen to win it, which is 95.7% the time our pot
pair of eights needs another 8, we win 97.8% of the time
a total bluff is drawing dead, we win 100% of the time

we're shipping it in if we can put our villain on the bottom part of the range you just gave

if the villain only plays two pair+ here I think we have to fold unless pot odds dictate a call