jungle x coastal adult size?

I've fallen in love with carpets and I'm planning on buying one for myself within the first few days of January. I'm pretty set on a jungle or coastal..but I've seen some crosses of the two and I'm wondering how big they get as adults. I know how large jungles and coastals get..are the crosses somewhere in the middle? List male and female sizes, in length and weight, please?
[size isn't really a huge issue, as I've got plenty of money/room for a nice, comfortable enclosure. I just can't seem to find this info anywhere]

Being that I do not crossbreed my carpets, I am only going by speculation. I would say that the crosses would be somewhere in the middle to longer. Coastals males about 8' - 9' and females 9' - 14' ( most around 10').

From what I've pieced together, it depends on which subspecies is more dominant, alot of coastalxjungles will have more coastal influence others will have more jungle influence which can make a big difference on the size they will get.

I think the general size is around 7-8ft though.

correct me if I'm wrong.