Dumeril's boa size

Shout out to any Dumeril’s keepers/breeders.
I have a question regarding growth. A couple years ago I was given the opportunity to acquire a couple dummy boas. I jumped, of course. Doing research on the species, I found references that say that they can reach 4.5 m in length. Uhuh, right and retics get 10 m. The big red TFH book. If anybody is wondering. I have personally seen a couple that were 7+ ft long and a few in the 5-6 ft range. I’m not sure if they are sexually dimorphic regarding adult size. They were 114 and 128 grams when I got them and 391 and399 grams at 1 year old. Last weight was 574 and 582 grams (Jan 24/25)
Like I always do when acquiring any species, I got two females. Males are purchased a year or two later. I bought them used. Second hand(?)Lol. That is, I got them from someone who got them from the breeder. He didn’t have any info on the parents, afaik.
Now, the two I have were born March 23 2023 so they are 2+ y.o. They have never had any issues (other than one of them repeatedly deciding that her cage is optional)but at 2+ y.o. they are @3 ft long. Is this average for two year old females? Or do I have males? I have heard/read that there are dwarf lineages but, again, not so sure of that.
They are kept in grow out racks with a warm side 30°C, cool side 24°C and non- shedding humidity of 50% with a bump to 65% when blue. Plus, damp rags in their hides. Both are fed large mice or small rats every ten days and have never refused food. Both are well proportioned and, imo, look good.
To the point- Is three ft long a normal size for a two year old?
They fed last night(May 24) so pics in a day or two.

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Or today. Just changed water.

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