I don't have a direct response to your question, because I'm not familiar with any of the blades you've mentioned. I do have some caveats to offer, though:
(1) Where are you getting the specs on the blades? I suspect you are getting them from an online skating store website. If so, I would verify them directly with the manufacturer, because retailer websites aren't always accurate (and I've seen the same errors propagated among different websites). On the Jackson Ultima website, the main rocker radius, but not the spin rocker radius, is given. On the Paramount website, the reverse is true: the spin rocker radius, but not the main rocker radius, is given. Especially if you are interested in a 8' main rocker radius, you should confirm with Paramount what the main rocker radius of the CP is: it's advertised as "comparable to" the MK Pro, which has a 7' radius. But "comparable to" can mean anything at all, so you need to check.
(2) Note that in addition to the CP (listed as a 12" spin rocker radius), Paramount also offers the CA (listed as a 27" spin rocker radius), advertised as comparable to the Wilson Coronation Ace, which also has a 7' radius. Again, you should check with Paramount on the spec for their version.
(3) The Paramount videos (
https://www.paramountskates.com/videos) are very informative; especially the ones on "Blade Profiles" and "Lift Angles". Note that when Paramount says a 27" spin rocker radius, they are actually referring to a compound spin rocker with a 12" spin rocker radius immediately in back of the drag pick, followed by a 27" spin rocker radius. This gives you a much higher heel lift for spins than a single 27" spin rocker radius, which is fairly flat. But note that all manufacturers do not follow this convention: in some instances, a 27" spin rocker radius means a fairly flat single spin rocker. So you must check directly with the manufacturer. Some manufacturers are way more responsive than others, however, in giving out specs (or even replying to inquiries).
(4) If you are considering Paramounts, make sure you have a tech in your area that can sharpen them. Not all skate holders can accommodate the Paramount blades, and some techs don't want to buy a special jig for them (that also applies for Ultima Matrix blades).
(5) The as-supplied ROH is not an issue. You can get them sharpened to your desired ROH.