Going from 50W to 100W is half S point and a lot of pain as very well explained by Farhan.
At least for me playing with uBitx is mire fun. Where ever I need 100W or more, I have 3 other commercial trancievers and linear amp.
There is no business model for our hoby.
Here is what I am adding to uBitx..
I already noticed that I will have to modify some of the LPFs as I noted is sperate post.