"Good job! I sought to say what I thought about your post in a similar fashion, but I found it wasn't as straightforward in actuality as it was in my anticipation."

This constraint is not what you could call most hard of all constraints that folks can comply with in writing. Many moons ago, I had many chats with a smart woman (an IT industry analyst, nowadays a VC!) using only four-symbol words (words just as long, or just as short, as "full" and "with"). All right, it wasn't always an option for us to comply fully with standard grammar; a substantial fraction of our writing did consist of partial phrasings (lacking a noun, or lacking an additional pars orationis, as folks would say in Latin -- say, "good work" and not "that's a good job"). Still, that woman and I could chat for a fairly long duration in this fashion, about a surprisingly broad array of topics.

I wish I had logs of our chats now, inasmuch as that constraint is fairly hard... I do think I said "Good Airs" in such a chat as a way of naming a capital city of a country south of Brazil. But much that I said is hard to think of now.