TH 10 what to do in laboratory

I just got to TH 10 and upgraded my laboratory but I dont know what should I upgrade (in normal Elixir), do u have some recomendations, i am thinking about getting wizards to 6 or freeze spell to level 2

have you maxed all your troops at TH9?

i upgraded archers lvl 7 first, next will be barbs, after that giants or wallbreaker

I upgraded first my farm troops: archers, barbarians and then minions (I use balloonions for pushing). I would do it that way: First your farming troops and archers, then the troops for trophy pushing.

best choice are

for farming: archers and then barbarians
for clan wars: pekka, freeze and then wizards

WIZARDS was my first upgrade when i became th10 ;)

My first upgrades: Minions to lvl6 then Hounds to lvl3 and now freeze to lvl2 (will work on it till its max).
Lavaloonion is a strategy you can use in war and to farm with.

If I were you, I'd get started on those wizards! ;)