Quests to do before Isle of Mists

[Sonny Fontaine]

I'm about to enter Isle of Mists for the first time and want to know what quests must be done before going there, cause I know some of them will fail or become unavailable anymore.

I got the list here, tell me if I'm missing something:

Velen

Ciri's Room

The Fall of the House of Reardon

Ghosts of the Past

An Invitation from Keira Metz

A Towerful of Mice

A Favor for a Friend

For the Advancement of Learning

Magic Lamp

Return to Crookback Bog


Novigrad

Cabaret

Carnal Sins

A Dangerous Game

A Matter of Life and Death

Fencing Lessons

Now or Never

An Eye for an Eye

Redania's Most Wanted

A Deadly Plot


Skellige

Possession

The Lord of Undvik

King's Gambit

Coronation


Kaer Morhen

Berengar's Blade

[Sonny Fontaine]

Oh yes, those too.
Now could u suggest one more thing. Should I start building my character properly now? I'm only lvl 25 and I mostly were using gear and weapons that I looted from bodies and crates.

Should I be paying more attention to gear and skills that I acquire right now or is it a bit too early?
However, Battle for Kear Morhen will accure soon.

[mestre.andre6]

Were can I find this Potion of Clearanse? Is there an especific location to buy it?