Snorlax

Congrats, i havent seen a 10km in the whole event.
Just tons of 2km (no lapras) and 3 5km ( one of each starter)

1. Got 2 10Km eggs. 1 Hatched Porygon. The other one is still cooking.
2. 89% L/HB Snorlax is a good enough IV and moveset to power up for me. I have a 82% one with that moveset that I powered up thinking I would use him as an attacker, but I hardly ever do.

Having amped mine, I would honestly recommend against it. I rarely pull him out as I have much faster alternatives (and at 35, I'm sure you do too).

I've gotten only one 10K since the event started, and it was a Chansey.

I use my L/HB Snorlax here and there. He does his job but other movesets I have do better on defense.

I've gotten Porygon (80%), Mareep (82%), Larvitar(91%), Dratini (78%), Chansey (87%), Snorlax (93%), Chansey (90%), Larvitar (78%).

I've hatched nearly the same as you, though I haven't paid real close attention to the number of 2k eggs 1 lapras (wg/ib) . 5 5km eggs got me all three gen 2 starters when I didn't have any before (also caught a chikorita). Hatched two 10 k eggs both yesterday, a dratini and an 84iv L/HS Snorlax. Finished off going from level 33 to level 34. Also several other new poke I'm definitely happy with the event so far. Wish I could have played more during it but work and holiday plans interfered quite a bit with that. As for that snorlax, I don't think I would power it up unless you have a fair amount of snorlax candy

From 10km Chansey and Snorlax...and one still cooking.
Both have very good IV.

...and a Lapras from a 2km

Glad when the event ends and I will finally get 10K again. Got 4 5K eggs and more 2Ks than I can count throughout the event. I'm tired of those already.

I've hatched a similar number of eggs as you, I think. I got three 5Kms (all three types of starters) and two 10Kms (dratini and chansey).

I have tried using a snorlax for attacking when I was much lower level, and had caught one near my level. It was too slow, and didn't give enough benefit to compensate.

You should wait until the event is over to see if you get a ZH lax. If not, go for it. I have a L/HB lax at 1800 CP that I love to use as my 6th prestiger. If I miss a dodge with one of my 5 specialist, I pull him out to finish the job. If I didn't have a ZH/BS, I would max him.

having 2 10km eggs both dratinis:) got about 90 dratini candies today <3

I'd definitely power the Snorlax, hard to have too many top ranking defenders on your roster.
1 Dratini hatched today and 2 more 10ks in the works