Do you play at your optimal server? Getting up to 200 ping seems quite extreme. Where are you from and on what server do you play?
Anyway, I don't think piking is the easisest to do with a high ping. Your
only attacking direction hits only in front of your character. It would probably be easier just stacking strength and heavy armour with a war cleaver or a glaive. Anyway, if you still want to go through with it, that's fine. At least you'll have superior length and I guess you'll eventually learn hit detection at that ping.
I would suggest going with a long spear and not convert too many skill points. 21/21 is nice on paper, but 21/18 is probably the best build I ever tried as a pikeman. Max out ironflesh, athletics and power strike and put the rest in weapon master. I'm usually not a fan of backup weapons, but with that ping I wouldn't advice going 1 vs. 1 with a pike/long spear. The mace is a brilliant weapon for 1 slot and can be used without a lot of 2h wpf investment. Sticking with your teammates will be mandatory with your ping, but it's always nice to fall back on a competent melee weapon when you're alone. I'm more of a fan of 1 vs. 1 with the pike myself, but it's not optimal.
As for choosing between pike and long spear. Pike is a lot slower and has a lower
base damage. When used right you'll actually outdamage the long spear quite often, and the pikemen eats long spearmen for breakfast with superior length. However, using a pike up close is suicide, you'll get stunned for long periods when someone blocks you or you hit obstacles, and your damage is poor when attacking a backpedaling enemy. While the long spear can perform quite well even when ganked I strongly suggest sticking close to
competent teammates if you're gonna use the pike. Learn who to trust, learn how to stay away from. Greatsword users who impresses themselves with their lolthrusting will never get any support from me, they're just wasting me and their own damage potential, and therefore hurting the team. There are some players that know by heart how to fight with a piker, and I guess you'll learn for yourself who that is. The ones who know where you are, use a lot of held swings for you to hit at the same time,
leaving the enemy's blocking useless. I know for a fact that Tor (on EU) is perhaps my best buddy to fight alongside. He just knows exactly how to play while being supported by a pikeman. Your worst enemies are throwers, skilled archers and offensive shielders. Having a good thrower focusing you or the likes of bagge or Zerobot (both EU) doing it, you're pretty much fucked. As a pikeman you're dedicating yourself to supporting. 3 slots and an unsheathable weapon. You can't get a good backup polearm, and you can't carry a shield while still carrying the pike. You'll be extremely vulnerable to range at any given time, and should
always move around. As for the offensive shielders, my worst nightmare on the enemy team is Merc_Bjorn. The guy's a massive tank, my pike will bounce unless at optimal range, he dishes out extreme damage and, most importantly, he's not afraid to break through your team's line to hurt you. A defensive shielder is not difficult to kill, a offensive one like Bjorn is hell.
In mass melee, I suggest you hold the second line and stab and try to be aware of all possible options. Try to be aware of flankers, cavalry coming from behind and who the top priority targets are. Even if a competent player rarely gets piked, knowing that you're there he can't perform anywhere close to what he usually does. Knowing that one will have a pike in your face the moment one releases the block to fight is a punch in the face, I've experienced that against good pikers on my alts. Anyway, even though you would like to keep hurting the priority targets most of the time, killing off the enemies random infantry is also a key to winning the battle. The numerical advantage can be used to gank the better players afterwards too. It all depends on the situation what you want to do, but a piker should be attacking at almost all opportunities that comes. Hanging around doing nothing as one is just wasting a big damage potential, and also fear factor. People hates pikes in mass melee and can't play with the freedom they're used to.
Also, final point from me. If your group is losing, it's no shame to retreat to some other group. Your damage potential should not be wasted getting ganked with the worst 1 vs. 1 weapon in the game.
Edit. Also forgot to mention that Zerran's guide and Feliz's guide are definitely worth reading if you want to go with the pike. I kept this very short, but they went a bit deeper.