Razvan -- when doing these calculations off the table, you want to figure out what is the *best* EV. Just proving that a decision is +EV isn't sufficient. You need to prove that the decision has a higher EV than your other choices.

For the original question, I believe your fold equity can compensate for your lack of pot equity only if you're folding out enough better hands. Otherwise, checking is the better option. In other words, if you only fold out hands you are already beating, then just check.

I don't feel like plugging in the numbers for you, but you need to factor in your risk when doing your calculations. You're only figuring out how much of the total final pot you get back, but then you can't compare the different decisions because you put different amounts of your stack into each choice.

E = your equity for that decision
P = starting pot size
F = villain fold %
B = bet size

EV(check) = E*P
EV(bet) = F*P + (1-F)*( E*(P+B) - (1-E)*B )