Thauma 2 gives Reversi, which can be useful for WB. SLH which is only good if you are wearing a dagger but you still shouldn’t rely on those flat buffs.
Longer transpose is nice but IMC have said you will be able to recast transpose without losing HP apparently so it won’t be a must, further Linker circles are much better overall than Thauma circles.
Wiz 3 > Linker > Thauma > Necro > FF is very versatile and probably very good, you will miss Linker 2 probably but you can still do everything you mentioned I believe.
Warlock might be better though.