505, I'm not sure you understand how the Randall works.
With the Hop rocket, you can A) Transfer from one keg to another and infuse the entire keg with hops. I've done this. You can B) Use it like a Randal and serve beer pushed through fresh hops, which give it a unique cold infusion of fresh hops. Finally you could, C) Dry hop the beer and STILL Randal it.
From what you've written, I get the impression you think the beer needs to sit on the hops for an extended period of time in order for the Rocket/Randall to work. It does not. The premise is that beer, under pressure, will grab lupins as it's pushed through the Rocket/Randal en route to your glass. The beer served will have a blast of hops even though they were not infused over time (days).
Example. I put chili's and hops in my Rocket and served a normal IPA ran through my Rocket and what did it taste like? A big IPA on chili's. It didn't need days to take the spice and hops.
I only point it out because you seem to be giving up on Randall because (it seems) you don't think your going to get a blast of hops. You will. The beer will flow quickly, and all of that beer (through the Randall) will be hoppy. If you have the time, I encourage you to dry hop the beer AND use the Randall. This is the sort of beers that commercial brewers can't sell on any sort of macro level, so if you want to impress people the best way is to produce something they can't have anywhere else.
I've got a Baby Shower coming up and I've got a DIPA that I'm going to dry hop AND serve on tap via the Rocket. It's going to be a huge party and I'm confident my DIPA on a Randall/Rocket will something that the average craft drinker has never tried before.