What should I upgrade first?

Hey guys, I just maxed out my TH9 today and I've begun my journey to th10.

What do you think I should upgrade first? and after in what order should I upgrade?

Thanks.

Spell Factory, Clan Castle, Lab should be 3 of your first upgrades.

If you war stay away from the infernos for a while, if you are mostly a farmer get the infernos ASAP.

Army camps, new drill, new mine, new pump always good investments.

For troops if you farm - the troops you use the most.
For war any of: Valk, Hound, Bowler, Golem, Freeze are all good bang for buck upgrades.

@Klavious Thats a good Strategy.
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If you arent into war then I would go this route
Lab->Infernos->xbow->New defenses->catch up new defenses->Max out infernos->max out xbows->max out wiz towers