Hopefully I'm not breaking any rules here but some time ago I wrote this sticky which explains some of the principles of head loss, pumps and plumbing.

Anyway, 3.21 * Filter PSI is just the return head. Depending on your plumbing system, total head can range from 3.5x all the way up to 5x of the filter pressure.

I have done quite a few head calcs for various pools and I can get pretty close but I need some more details about your pool.

It would be surprising to have 3/4" pipe from the pad to the pool so is that just the eyeball opening or is the whole pipe that diameter from the pad to pool.

So basically, I need the following.

# of return pipe runs, pad to pool, their length and diameter.
# suction pipe runs, pad to pool, their length and diameter.

I guess at the rest and can get fairly close since I have the filter pressure.

However, since you have only one suction line and it is 1 1/2" pipe, my guess is that your suction head is quite high and probably not much less than the return head but it depends some on the return piping configuration.

So without seeing the details of your plumbing, my guess would be 4.5x filter PSI for the 8 PSI and or 32 feet and 4x for the 14 PSI or 56 feet. But that is just a guess. I don't use the same multiplier since the second case is adding head loss to the return but not the suction.