Cloning a recolor, "best practice" question

Hello !

I'm sorry if this post is very long for only a small question in the end, but I confess I don't understand everything in this wonderful tool, especially because English is not my mother language. So I'll try to explain everything I do with my own words, and it can be long, but please bear with a poor French girl (that's me, of course, if you had any doubts on the subject...  )

I use the beta 2.5.1.7 Joy version and I want to make recolors from the cheapest base game double bed. I plan 6 recolors for the frame and 10 recolors for the blankets. Here is one of them :



I began by one frame color & the ten blankets colors. For this I cloned the game bed, removed all swatches but one and created my ten swatches, the same frame texture for all, and 10 blankets textures. (Some frames swatches in the original objects share the same texture, so I thought it was simpler this way)

I also "cleaned" the object through the warehouse. That is, I assigned the same and only frame texture for all of the ten swatches, normal and burnt states, and also for the blanket part, I assigned the normal texture to the burnt state (the swatches duplication didn't duplicate the burnt texture, only the default one, so the burnt texture had stayed the base game default one), and then I deleted the now useless DST images I had removed from entries. So now my object is all clean, tested in game both in normal and in burnt state, and as small as can be (but still around 5Mb).

Now I have to do the same with the other 5 frame colors. And I'd very much like to avoid doing all this again with those 5 (really time consuming and error generating). So I have cloned my first "clean" recolor (by putting it in the Sims4studio Mods folder) and simply changed the frame texture.
Of course, by doing so I'll have 6 objects instead of one, but I prefer this, as one single object would be really large (around 30 Mb) AND I'd have to clean the additional recolors the way I did for the first one. And if I didn't clean the object, it would be way larger than 30 Mb...

Before I generate and modify the thumbnail, which is a bit long, I'd like to know if I'm doing the right thing. So here is (finally) my question : is it OK to do this, won't there be any constraints, or problem in cloning a custom object instead of the game object ? And an additional question : would there be a better/more best practice/whatever solution ?
And more generally, does the game can handle without problem large objects (like a 30Mb one, for instance  ) or is it better to split it when possible, in order to avoid lag or problems in-game ?

Thanks for the courageous ones who arrived to the end of this post... I hope what I explained was clear enough...