At current diff it's 100% luck-based when you receive a block at 5k pps.
would a mining pool help at all? or would it add up to the same amount in the end?
I tried ypool and got a whopping 300pps...
Theoretically speaking, it should be higher solomining because you don't have the pool's fee.
This is theoretical because of the luck factor, because it is only true based on a long term. Because of the long term, at one point you just won't find any block anymore.
So you got to look short term and than it just depends on how much luck you have, solomining is taking a gamble to have more profits. Poolmining a known profit.
edit: didn't factor in the pool's mining software, if it gives you way less pps, go solo till they update so you get the same pps