Need help with my Crosslightsaberstaff projekt!

[Smirre]

Hello Guys and thx in advance in case anyone is checking this out! <3

Im very very new in this skinning community i just finished my first skin ever! It will soon be uploaded here under the name:
Papa Emeritus 3 (Playerskin)   yeah! :DD
To cut to the point my next projekt will be the crosslightsaberstaff:
https://www.google.at/search?q=cross+lightsaber+staff&espv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiFodP7q-XSAhXpPZoKHYpkC5EQ_AUIBigB&biw=1366&bih=662#imgrc=PL8M5mSH_5uqRM:

As i saw there are allready models that have features like my model i thought it must be possible!
References:
https://jkhub.org/files/file/761-x-saber-mod/
https://jkhub.org/files/file/2609-kylo-rens-lightsaber/
https://jkhub.org/files/file/3022-laser-spear/
https://jkhub.org/files/file/3151-the-vinesaber/
https://jkhub.org/files/file/670-sith-assassin-blade/

First is i dont know where to start! I will find out over tutorials and formus how to open a saberstaff in blender hopefully but i still didnt..
I will need support with a lot of things in this project as i really dont know where to even start looking or how to ask the correct questions..
I really hope u guys can help me to finish this project :DD

Logical questions:
If one side of the saberstaff gets switched off in battle does it "reshape" itself in the "staff one side turned on" model in an animation?
Or how would it work in my case, because i would have to make a new hilt obviously, similar to the laser-spear i posted above...
but then when i turn off one side i dont just want the one end of the staff to turn off the saberblade, but make it change into a Kylo ren crossguard saber (also like posted above) also with the slight difference that it has a smaller daggerish blade on the bottom of the hilt so that all ends end in a blade so to say (i hope you can imagine what i mean... xDD)
So practically if i would allready have the finished model off the crosssaberstaff working in game, when i then have the staff turned on and switch off one side,
it should look like as if the center of the cross is rejecting towards the hilt while the blades on the side of the cross get shorter until they reach the lengh of the kylo ren saber.. 
The main blade (the middle blade of the cross, the only blade doing damage of course) would become longer as the center off the cross rejects itself towards the center of the hilt now becoming the Kylo ren saber..
For the other end of the staff it would also have to reject itself towards the hilt until it would no longer be the other side of the staff with a blade at the end, but now the complete kylo ren saber with the slight difference that the small blade at the end would still be there but smaller than in the beginning...
On the opposite it would do the same thing in reverse obviously.. it would eject the "staffhilt" again and would adjust the lengh of the saberblades back to the model it was.

If u read through all of this really really thank you! I hope my explenations are somewhat imaginable..
If u could tell me where to start it would help me a lot! As i said i use blender and i know now a little bit about making 3d models and texturing them...
but i guess i will have to make animations for this? I dont know xD
With greetingz and highest regards        your Smirre ) <33

[Circa]

Topic moved to Modding Assistance forum.