I think your premise may be wrong. 80-90 vills in Imp + arbs and some BBCs/trebs is a strong push.
With CA it isn’t as good because HCA is expensive AF, and the mobility isn’t as useful because you don’t have a hussar engine going yet. 80-90 vills is nowhere near enough to do that.
I’d take a step back here and go well, you assume that you getting that imp timing means you are ahead, but are you actually?
If you aren’t ahead in vills then I’d argue you are not ahead.
I think stay in castle age longer, boom harder and then go to Imp with like 120 vills then you can actually get to HCA + hussar and really dominate?
Like why are HCA better than arbs?
Because pop effectively they are stronger with full upgrades, if you aren’t pop capped then they aren’t better than arbs.
If you don’t have all upgrades then they aren’t better than arbs.
So perhaps boom then go to Imp when you can be pop capped and have all upgrades?
Ofc in some games they have forward castles or something and so well you need Imp to treb them down, but I bet in those games you aren’t struggling with closing it out!
But otherwise maybe boom longer before going to Imp?