Hi and lens help / advice please

[WanderingInSaigon]

Hi all,

new to the forum and thanks I’m advance for and help and advice given, and sorry if this is in the wrong place. 
 

I mostly shoot street photography and as such my lens lineup is 16mm1.4, 23mm1.4, 35mm1.4. Possibly a bit overkill for my needs but I can’t choose between the 23 and 35 and I have a pretty even spread in terms of percentages used. I bought a viltrox 56mm1.4  for portraits just mainly for personal use of my son and cat (sad to admit that part I know) but recently I’ve been doing more portrait work and seem to be getting asked more and more to do so. 
 

With the above in mind I have a few options trade in the viltrox and make a hefty outlay on the 50mm1.0 (I’m discounting the 2.0 as I do a fair amount of my photography after my day job and well it is dark here early). As before sell the viltrox and get the Fuji 56mm1.2 (will I notice that much of a difference, and is it worth it, the only negatives I have with the viltrox is the amount of purple fringing to sort in post?). Alternatively there is the 90mm (I know it’s 2 as I just discounted but I am thinking keep the viltrox for when low light requires another step and use the 90 as main shooter otherwise). 
 

Thoughts will be greatly greatly received from those with experience in this. I should add mostly my portrait stuff is still outdoors, im not a studio kind of guy and I like to take advantage of the beautiful city I live in. 
 

Thanks in advance.